{"id":87071,"date":"2023-01-31T13:40:00","date_gmt":"2023-01-31T16:40:00","guid":{"rendered":"https:\/\/vestibulares.estrategia.com\/portal\/?p=87071"},"modified":"2024-04-03T11:25:30","modified_gmt":"2024-04-03T14:25:30","slug":"reacoes-organicas","status":"publish","type":"post","link":"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/reacoes-organicas\/","title":{"rendered":"Rea\u00e7\u00f5es org\u00e2nicas: o que s\u00e3o e classifica\u00e7\u00f5es"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><span id=\"urn:local-annotation-817452\" class=\"textannotation disambiguated\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/reacoes-organicas\">Rea&ccedil;&otilde;es org&acirc;nicas<\/span> s&atilde;o processos qu&iacute;micos que acontecem entre <span id=\"urn:enhancement-956cb5f2-ac62-40a8-9b5f-118dbe7541c4\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/reagentes\">reagentes<\/span> <span id=\"urn:enhancement-778db97a-4d19-4ead-8f12-fe9878bd16d6\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/compostos-organicos\">org&acirc;nicos<\/span>, formando <span id=\"urn:enhancement-700aa64d-b5bb-4d8a-9395-0a523a51de1a\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/produtos\">produtos<\/span> que tamb&eacute;m possuem cadeias carb&ocirc;nicas. Elas s&atilde;o importantes para a constitui&ccedil;&atilde;o de diversos materiais utilizados no dia a dia, como os <span id=\"urn:enhancement-c78e7c6f-b3dd-45d3-9ad9-3b811b7c8e65\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/polimero\">pol&iacute;meros<\/span>, os combust&iacute;veis, os <span id=\"urn:enhancement-8b37c1c1-71f9-441a-9122-b25e3078e44a\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/medicamento\">medicamentos<\/span> e etc.&nbsp;<p class=\"wp-block-paragraph\">O conceito de <span id=\"urn:enhancement-231fc34e-8832-4672-a939-4d4c3ac5905b\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/reacao-organica\">rea&ccedil;&atilde;o org&acirc;nica<\/span> &eacute; simples e, depois, esses processos podem ser subdivididos em classes, como as rea&ccedil;&otilde;es de adi&ccedil;&atilde;o, substitui&ccedil;&atilde;o, elimina&ccedil;&atilde;o ou <span id=\"urn:enhancement-2aaa7df5-7209-4300-a346-08ded30f5a0f\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxirreducao\">oxida&ccedil;&atilde;o<\/span>. Neste artigo, veja um resumo sobre cada um desses tipos, quais as caracter&iacute;sticas e principais exemplos. Vamos l&aacute;?<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">Navegue pelo conte\u00fado<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/reacoes-organicas\/#Reacoes-organicas-de-adicao\" >Rea&ccedil;&otilde;es org&acirc;nicas de adi&ccedil;&atilde;o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/reacoes-organicas\/#Questao-de-vestibular-sobre-reacoes-organicas\" >Quest&atilde;o de vestibular sobre rea&ccedil;&otilde;es org&acirc;nicas<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/reacoes-organicas\/#Estude-para-o-vestibular-com-o-Estrategia\" >Estude para o vestibular com o Estrat&eacute;gia!<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"h-reacoes-organicas-de-adicao\"><span class=\"ez-toc-section\" id=\"Reacoes-organicas-de-adicao\"><\/span>Rea&ccedil;&otilde;es org&acirc;nicas de adi&ccedil;&atilde;o<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">A primeira das <span id=\"urn:local-annotation-541441\" class=\"textannotation disambiguated\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/reacoes-organicas\">rea&ccedil;&otilde;es org&acirc;nicas<\/span> a ser estudada &eacute; a &ldquo;adi&ccedil;&atilde;o&rdquo;. Como aponta o nome, esse processo qu&iacute;mico &eacute; utilizado para unir duas ou mais <span id=\"urn:enhancement-65c32bb7-208a-4acd-b2ed-ef5bae7266f0\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/substancia\">subst&acirc;ncias<\/span> <span id=\"urn:enhancement-ef238e6f-0c9d-47c5-84ee-6b7868677067\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/compostos-organicos\">org&acirc;nicas<\/span>, com o objetivo de formar <span id=\"urn:enhancement-d5b56e9f-4ead-4860-9da5-7520e582006f\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/produtos\">produtos<\/span> <span id=\"urn:enhancement-002ac17a-b722-4d96-9029-ce3c24d3d5e7\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/compostos-organicos\">org&acirc;nicos<\/span>. Uma representa&ccedil;&atilde;o simplificada seria: A + B &rarr; C.<\/p><p class=\"wp-block-paragraph\">Dentro desse tipo de <span id=\"urn:enhancement-424e805c-969d-4a12-9f5b-5baab929f933\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/reacao-organica\">rea&ccedil;&atilde;o org&acirc;nica<\/span>, existem diferentes processos que podem ser nomeados, como a halogena&ccedil;&atilde;o. Esta acontece quando um <span id=\"urn:enhancement-9ccefbd0-82e6-41c5-a695-49ac41343226\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/compostos-organicos\">composto org&acirc;nico<\/span> reage com elementos halog&ecirc;nios (como o cloro ou o bromo) e esses &aacute;tomos s&atilde;o adicionados no esqueleto carb&ocirc;nico.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/lh3.googleusercontent.com\/Mm6pIQM3Dyr6cDTQoMyw22R5byEBFYBUdIDse0fn53rDkITHl8eGSXz4JhLYaeWIs9OG5P_9Dot5aK2GHvggx3yFUTjZMIaKrZMZaSEtyJi9NomLxwuZKlr0C2Z1z9wmJltKXQj9AVUwv8yXBBKi_LAbVeAgZAa4YrXbTMuh1V1upR5zD6deSvlOaCZrXg\" alt=\"Exemplo de rea&ccedil;&atilde;o org&acirc;nica\"><figcaption class=\"wp-element-caption\">Imagem: Reprodu&ccedil;&atilde;o\/Wikimedia<\/figcaption><\/figure>\n<\/div><p class=\"wp-block-paragraph\">A hidrogena&ccedil;&atilde;o, como indica o nome, &eacute; a adi&ccedil;&atilde;o do g&aacute;s hidrog&ecirc;nio no sistema. Os &aacute;tomos de H podem se juntar ao <span id=\"urn:enhancement-7f9a59f8-1ea5-4231-a80c-5593dfa3a72d\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/compostos-organicos\">composto org&acirc;nico<\/span>, como acontece quando &oacute;leos vegetais s&atilde;o hidrogenados e formam a margarina.<\/p><p class=\"wp-block-paragraph\">Existe, ainda, a hidrata&ccedil;&atilde;o, quando mol&eacute;culas de &aacute;gua s&atilde;o adicionadas ao <span id=\"urn:enhancement-93a29a10-2358-4af0-934f-f8f93011d569\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/compostos-organicos\">composto org&acirc;nico<\/span>. Em muitos casos, esse processo &eacute; utilizado para rearranjar um composto insaturado, de forma a excluir a insatura&ccedil;&atilde;o, como mostra a imagem abaixo.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/lh6.googleusercontent.com\/Ubmh_NGyXKlUcw5ltFWDarjTYmoXOwfBDcHeb256JzdWg7vt606hMLC0AJBU8K96fyzS-soyJX-nuGq06pQcUl01PYL67gdqelSmw26HNtNtRrD_vFjWACsbJcbUrUpsEKt4i3NqJSFL6fBUoH9qi2ac8HOU950W6G6jpXOoFNNvUxYqa51kXK-tMw_qqA\" alt=\"rea&ccedil;&otilde;es org&acirc;nicas\"><figcaption class=\"wp-element-caption\">Imagem: Reprodu&ccedil;&atilde;o\/Wikimedia<\/figcaption><\/figure>\n<\/div><h3 class=\"wp-block-heading\" id=\"h-reacao-de-substituicao\">Rea&ccedil;&atilde;o de substitui&ccedil;&atilde;o<\/h3><p class=\"wp-block-paragraph\">A rea&ccedil;&atilde;o de substitui&ccedil;&atilde;o &eacute; diferente porque troca &aacute;tomos dentro da estrutura carb&ocirc;nica, originando novos compostos a partir do primeiro.<\/p><p class=\"wp-block-paragraph\">Nessa classifica&ccedil;&atilde;o tamb&eacute;m &eacute; observada a halogena&ccedil;&atilde;o, por&eacute;m o processo &eacute; diferente. Aqui, os &aacute;tomos de hidrog&ecirc;nio da <a href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/cadeia-carbonica\/\" target=\"_blank\">cadeia carb&ocirc;nica<\/a> seriam substitu&iacute;dos por halog&ecirc;nios. Em geral, tamb&eacute;m &eacute; constru&iacute;do uma segunda mol&eacute;cula, que &eacute; formada pela jun&ccedil;&atilde;o do H com o halog&ecirc;nio em quest&atilde;o.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/lh5.googleusercontent.com\/qCWZpNs2ul9FgBQf8xNi8uRLty6GlW1mpSGSrYnQMQIGsxNju_2nlWulHM9MRwN6WSrWrTlGRfQBmiKEFhRL5FT5w9D6i_Mj5PV3e8y9eIS-8to37aAfozHbYoyzIDC-tA5DC0DIWp2FYzxIewirnr-Qvwm07vMaJzf0Oh9z4KUSrtRjWG_Fw6IMc4w3eA\" alt=\"exemplo de rea&ccedil;&otilde;es org&acirc;nicas\"><figcaption class=\"wp-element-caption\">Imagem: Reprodu&ccedil;&atilde;o\/wikimedia<\/figcaption><\/figure>\n<\/div><p class=\"wp-block-paragraph\">Quando um <span id=\"urn:enhancement-54722bc3-5dac-4fef-91ac-dfb1ed1efd98\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/compostos-organicos\">composto org&acirc;nico<\/span>, por exemplo um <span id=\"urn:enhancement-81b3b8ac-fe93-4d75-9dca-b09e1e6a5ef9\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/hidrocarbonetos\">hidrocarboneto<\/span>, reage com o &aacute;cido n&iacute;trico, ocorre uma rea&ccedil;&atilde;o de substitui&ccedil;&atilde;o por nitra&ccedil;&atilde;o. Isso significa que o grupamento nitro (&mdash;NO<sub>2<\/sub>) ser&aacute; substitu&iacute;do dentro da mol&eacute;cula, geralmente na troca por um hidrog&ecirc;nio.&nbsp;<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/lh4.googleusercontent.com\/F3carfTvzhAoImrw4g6UxmW45EAp-auLrh8w-tAuV1nutMvrLsWadwfLk-VZz4YKbaaH3It02DLSZwzFNibMUI5CjDPZxqfsxzKr4sA1sv2PfDRBaBapECVQA_n8pgLFEwGirZH_7SL5N3xxk-AioCzrKOMyEl5dpEE1FVi2BDA5O0Uk_yavKEhautAO5w\" alt=\"rea&ccedil;&otilde;es org&acirc;nicas\"><figcaption class=\"wp-element-caption\">Imagem: Reprodu&ccedil;&atilde;o\/wikimedia<\/figcaption><\/figure>\n<\/div><p class=\"wp-block-paragraph\">Um outro grupo qu&iacute;mico tamb&eacute;m pode substituir o hidrog&ecirc;nio em <span id=\"urn:enhancement-4ebd11bf-558d-47cf-aceb-6d417e4182fc\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/compostos-organicos\">compostos org&acirc;nicos<\/span>, &eacute; o grupo sulf&ocirc;nico (&mdash;SO<sub>3<\/sub>H), que aparece quando a mol&eacute;cula org&acirc;nica reage com o &aacute;cido sulf&uacute;rico, que tem f&oacute;rmula H<sub>2<\/sub>SO<sub>4<\/sub>.<\/p><h3 class=\"wp-block-heading\" id=\"h-reacao-de-eliminacao\">Rea&ccedil;&atilde;o de elimina&ccedil;&atilde;o<\/h3><p class=\"wp-block-paragraph\">Rea&ccedil;&otilde;es <span id=\"urn:enhancement-0ab710c3-20b7-4693-aa5a-b6fe56599311\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/compostos-organicos\">org&acirc;nicas<\/span> de elimina&ccedil;&atilde;o acontecem quando a mol&eacute;cula &eacute; dividida em duas partes diferentes. Geralmente, um dos <span id=\"urn:enhancement-f957ecdf-d7a2-444b-ad9a-bfb855046744\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/produtos\">produtos<\/span> possui <span id=\"urn:enhancement-4141b856-c663-4f85-892b-7e9b00d27ca7\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/cadeia-carbonica\">cadeia carb&ocirc;nica<\/span>, enquanto o outro &eacute; de classifica&ccedil;&atilde;o inorg&acirc;nica.<\/p><p class=\"wp-block-paragraph\">Uma das formas de fazer uma rea&ccedil;&atilde;o de elimina&ccedil;&atilde;o org&acirc;nica &eacute; por meio da desidrata&ccedil;&atilde;o intramolecular. O nome aponta o evento que deve ocorrer nesses casos, ou seja, mol&eacute;culas de &aacute;gua s&atilde;o formadas a partir daquele composto. Isso significa que a <span id=\"urn:enhancement-590cd1a8-4525-45c7-ad00-8f52b2708fc7\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/substancia\">subst&acirc;ncia<\/span> deve perder dois &aacute;tomos de hidrog&ecirc;nio e um <span id=\"urn:enhancement-cef25631-8b11-4b03-8f0c-6bebcac2905a\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/atomo\">&aacute;tomo<\/span> de oxig&ecirc;nio.&nbsp;<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/lh6.googleusercontent.com\/v0sA1Ljm_uiYjWNyqZ0SMkTmxzx1qqf_Dq4eWWYDmIKSdd8ZLrJpqEgThjKXovxGZ1FAPqgSijFwHBGqORezsTCAz5pxLmocm8K4drPBKHKAke59gfs2kj2ooMfIhu1E26CDFl774mPkV9X1d-R-uDcuNh_kNl8lXhla2lT4r9WhAI9gfmCYcsCDnJQ1-Q\" alt=\"rea&ccedil;&atilde;o org&acirc;nica\"><figcaption class=\"wp-element-caption\">Imagem: Reprodu&ccedil;&atilde;o\/wikimedia<\/figcaption><\/figure>\n<\/div><p class=\"wp-block-paragraph\">No exemplo acima, voc&ecirc; pode observar que o <span id=\"urn:enhancement-881ce118-f258-4aa8-94bb-54c251c1385d\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/reagentes\">reagente<\/span> est&aacute; imerso em um sistema a 170&ordm;C, em que o &aacute;cido sulf&uacute;rico &eacute; um catalisador no meio. A mol&eacute;cula de etanol (<span id=\"urn:enhancement-a4d47ff3-34a1-414b-9db1-922a18c73dae\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/reagentes\">reagente<\/span>) &eacute; impulsionada a liberar uma mol&eacute;cula de &aacute;gua e, com isso, forma-se uma insatura&ccedil;&atilde;o, que gera tamb&eacute;m o <span id=\"urn:enhancement-29370b9e-1727-4d0b-8307-8a64338b5b66\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/hidrocarbonetos\">hidrocarboneto<\/span> eteno. Grande parte dos <span id=\"urn:enhancement-6c2aba52-b71b-46b3-9922-70fa793f84f7\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/alceno\">alcenos<\/span> s&atilde;o formados a partir da desidrata&ccedil;&atilde;o intramolecular de um <a href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/alcool\/\" target=\"_blank\">&aacute;lcool<\/a>.<\/p><p class=\"wp-block-paragraph\">Nas rea&ccedil;&otilde;es de elimina&ccedil;&atilde;o, existe tamb&eacute;m a desidrata&ccedil;&atilde;o intermolecular. Nesse processo, duas mol&eacute;culas reagem entre si, formam um novo composto e tamb&eacute;m liberam mol&eacute;culas de &aacute;gua. Nesse caso, os <span id=\"urn:enhancement-2c3a18fc-f5ef-4087-9229-c9d18b3d5e7a\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/compostos-organicos\">compostos org&acirc;nicos<\/span> se unem, formando uma <span id=\"urn:enhancement-5b3eee4b-a8f9-4fa2-9d15-c0fad331e5b4\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/cadeia-carbonica\">cadeia carb&ocirc;nica<\/span> mais longa.<\/p><h3 class=\"wp-block-heading\" id=\"h-reacao-de-oxidacao\">Rea&ccedil;&atilde;o de oxida&ccedil;&atilde;o<\/h3><p class=\"wp-block-paragraph\">Existem, ainda, as rea&ccedil;&otilde;es <span id=\"urn:enhancement-aca046fc-b687-4ff6-bb53-f0b6df6f52aa\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/compostos-organicos\">org&acirc;nicas<\/span> de <span id=\"urn:enhancement-222bcfed-c262-4e64-b766-2345b29856b4\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxirreducao\">oxida&ccedil;&atilde;o<\/span>. Nesse caso, o n&uacute;mero de oxida&ccedil;&atilde;o (nox) dos &aacute;tomos &eacute; alterado durante o processo qu&iacute;mico. Em geral, as insatura&ccedil;&otilde;es se rompem, o que contribui para um aumento do nox nos &aacute;tomos de <span id=\"urn:enhancement-78f8ed07-5175-4151-bcdd-6d4d0b6b91e5\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/carbono\">carbono<\/span> e, para que ocorra a rea&ccedil;&atilde;o de <span id=\"urn:enhancement-7a6a8247-4cbe-4de8-a195-0acf0304a984\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxirreducao\">oxida&ccedil;&atilde;o<\/span>, &eacute; necess&aacute;ria a presen&ccedil;a de um catalisador no meio, que favore&ccedil;a a transforma&ccedil;&atilde;o at&ocirc;mica.&nbsp;<\/p><p class=\"wp-block-paragraph\">O primeiro m&eacute;todo &eacute; chamado de <span id=\"urn:enhancement-f636bdfd-3878-41e5-bdda-11b3a6506348\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxirreducao\">oxida&ccedil;&atilde;o<\/span> en&eacute;rgica, demanda elevadas concentra&ccedil;&otilde;es de permanganato de pot&aacute;ssio (KMnO<sub>4<\/sub>), acontece em altas temperaturas e favorece a ruptura das insatura&ccedil;&otilde;es, com substitui&ccedil;&atilde;o por outro grupo funcional.&nbsp;<\/p><p class=\"wp-block-paragraph\">Como <span id=\"urn:enhancement-06fd1ed5-c1b1-4401-ad04-c6529961d8a6\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/produtos\">produtos<\/span>, al&eacute;m do composto alterado, podemos encontrar g&aacute;s carb&ocirc;nico, &aacute;gua, <a href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/acidos-carboxilicos\/\" target=\"_blank\">&aacute;cido carbox&iacute;lico<\/a> ou mol&eacute;culas cet&ocirc;nicas.&nbsp;<\/p><p class=\"wp-block-paragraph\">H&aacute; tamb&eacute;m uma rea&ccedil;&atilde;o de <span id=\"urn:enhancement-149badc0-59a6-4740-9595-9d0a958d3ff4\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxirreducao\">oxida&ccedil;&atilde;o<\/span> que ocorre de forma mais &ldquo;branda&rdquo;. Nesse caso, o catalisador ainda &eacute; o permanganato de pot&aacute;ssio, mas a temperatura do meio e a concentra&ccedil;&atilde;o do &aacute;cido n&atilde;o precisam ser t&atilde;o marcantes quanto no caso anterior.&nbsp;<\/p><p class=\"wp-block-paragraph\">&Eacute; preciso tratar, tamb&eacute;m, a respeito da <span id=\"urn:enhancement-241ea08b-8f22-4814-9d09-22cf8d869d49\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxirreducao\">oxida&ccedil;&atilde;o<\/span> dos &aacute;lcoois. Ela s&oacute; acontece quando o hidrog&ecirc;nio &eacute; trocado por &aacute;tomos de elementos mais eletronegativos do que ele e, com isso, o <span id=\"urn:enhancement-1a5472cc-03fd-4f46-9c89-3bf8d11ea4d0\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/carbono\">carbono<\/span> ligado &agrave; <span id=\"urn:enhancement-aefa5777-df47-4329-852d-f9c96b2b730e\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/hidroxila\">hidroxila<\/span> ter&aacute; um aumento do nox. Afinal, um dos principais elementos mais eletronegativos que o H &eacute; o pr&oacute;prio oxig&ecirc;nio.&nbsp;<\/p><p class=\"wp-block-paragraph\">Nesse sentido, quando os &aacute;lcoois prim&aacute;rios sofrem <span id=\"urn:enhancement-9a3274ef-f1bd-478d-9079-73d189a4d71d\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxirreducao\">oxida&ccedil;&atilde;o<\/span>, formar&atilde;o <span id=\"urn:enhancement-b85f233f-4372-4d6c-b7da-8debe4060e35\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/aldeidos\">alde&iacute;dos<\/span> ou <span id=\"urn:enhancement-c4a1c1e8-d8ae-433e-9f21-4f6965032df3\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/acidos-carboxilicos\">&aacute;cidos carbox&iacute;licos<\/span>, a depender do tipo de cadeia observada; quando o &aacute;lcool &eacute; secund&aacute;rio, o <span id=\"urn:enhancement-a2e99c3b-edbc-4fab-a564-1cc4d6695a0b\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/produtos\">produto<\/span> ser&aacute; cet&ocirc;nico.<\/p><p class=\"wp-block-paragraph\">Por fim, a ozon&oacute;lise &eacute; o tipo de<a href=\"https:\/\/www.youtube.com\/watch?v=rdbf6V9BaZo\" target=\"_blank\"> rea&ccedil;&atilde;o org&acirc;nica <\/a>que ocorre quando o <span id=\"urn:enhancement-5622b428-061a-4d89-a6d0-e59ad52ec88d\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxirreducao\">agente oxidante<\/span> &eacute; o oz&ocirc;nio (O<sub>3<\/sub>). Essa mol&eacute;cula atuar&aacute; no sentido de quebrar a insatura&ccedil;&atilde;o, formando um anel de oxig&ecirc;nio, que pode originar tanto uma cetona (se o <span id=\"urn:enhancement-c62be567-c99b-4f2a-bfcd-dae4be27b4ec\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/carbono\">carbono<\/span> for terci&aacute;rio) ou um <span id=\"urn:enhancement-21dc16a6-8bb3-441b-a62c-adcce24b1cd6\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/aldeido\">alde&iacute;do<\/span> (quando o <span id=\"urn:enhancement-35bfc161-f1bf-4f89-b420-655597cbdc62\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/carbono\">carbono<\/span> &eacute; prim&aacute;rio ou secund&aacute;rio).<\/p><h2 class=\"wp-block-heading\" id=\"h-questao-de-vestibular-sobre-reacoes-organicas\"><span class=\"ez-toc-section\" id=\"Questao-de-vestibular-sobre-reacoes-organicas\"><\/span>Quest&atilde;o de vestibular sobre rea&ccedil;&otilde;es org&acirc;nicas<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">(Cesgranrio-RJ)<\/p><p class=\"wp-block-paragraph\">&Eacute; dada a rea&ccedil;&atilde;o <\/p><figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"667\" height=\"280\" src=\"https:\/\/vestibulares.estrategia.com\/portal\/wp-content\/uploads\/2023\/01\/REACOES-ORGANICAS.jpg\" alt=\"Quest&atilde;o de vestibular sobre rea&ccedil;&otilde;es org&acirc;nicas\" class=\"wp-image-87080\"><\/figure><p class=\"wp-block-paragraph\">que &eacute; classificada como uma rea&ccedil;&atilde;o de:<\/p><p class=\"wp-block-paragraph\">a) adi&ccedil;&atilde;o.<br>b) <span id=\"urn:enhancement-18fa6c93-8366-4592-a566-9c5d4a8cd89c\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/ciclo-hidrologico\">ciclo<\/span>-adi&ccedil;&atilde;o.<br>c) condensa&ccedil;&atilde;o.<br>d) elimina&ccedil;&atilde;o.<br>e) substitui&ccedil;&atilde;o.<\/p><p class=\"wp-block-paragraph\">Na imagem &eacute; demonstrada uma rea&ccedil;&atilde;o entre o benzeno e o &aacute;cido sulf&uacute;rico. Ao final do processo qu&iacute;mico, observa-se que o benzeno admitiu um grupamento novo, SO<sub>3<\/sub>H, que &eacute; chamado de grupo sulf&ocirc;nico. Ao mesmo tempo, uma mol&eacute;cula de &aacute;gua aparece como <span id=\"urn:enhancement-4496f68a-5029-41a5-89b4-f75035c2dbde\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/produtos\">produto<\/span> da <span id=\"urn:enhancement-f0007af0-bbd8-4a34-b9da-b1dbf2e27612\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/reacao-organica\">rea&ccedil;&atilde;o org&acirc;nica<\/span>.&nbsp;<\/p><p class=\"wp-block-paragraph\">Nesse sentido, &eacute; poss&iacute;vel observar que os &aacute;tomos de hidrog&ecirc;nio do anel arom&aacute;tico foram substitu&iacute;dos pelo grupamento de enxofre, o que traz uma nova configura&ccedil;&atilde;o &agrave; mol&eacute;cula, ao mesmo tempo em que se forma uma mol&eacute;cula de &aacute;gua, devido ao hidrog&ecirc;nio que se perdeu e ao oxig&ecirc;nio do &aacute;cido inorg&acirc;nico. Assim, a alternativa correta &eacute; a <strong>letra E<\/strong>.<\/p><h2 class=\"wp-block-heading\" id=\"h-estude-para-o-vestibular-com-o-estrategia\"><span class=\"ez-toc-section\" id=\"Estude-para-o-vestibular-com-o-Estrategia\"><\/span>Estude para o vestibular com o Estrat&eacute;gia!<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Gostou do resumo? Voc&ecirc; pode encontrar mais informa&ccedil;&otilde;es sobre <span id=\"urn:enhancement-aa8325fe-0abd-46b8-a01c-4de40f6e46f6\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/quimica\">qu&iacute;mica<\/span> e todas as outras disciplinas nos cursos do Estrat&eacute;gia Vestibulares. Todas essas informa&ccedil;&otilde;es ficam dispon&iacute;veis no Livro Digital Interativo, que voc&ecirc; pode acessar quando e onde puder, para ter o primeiro contato ou revisar tudo aquilo que j&aacute; sabe. Clique no banner abaixo e conhe&ccedil;a melhor!<\/p><p class=\"wp-block-paragraph\"><a id=\"cta\" class=\"cta-imagem\" href=\"https:\/\/vestibulares.estrategia.com\/curso\/pacote-enem\/\" target=\"blank\">\n                <img decoding=\"async\" width=\"100%\" src=\"https:\/\/vestibulares.estrategia.com\/portal\/wp-content\/uploads\/2021\/12\/Enem.jpg\" alt=\"CTA curso Enem\" title=\"CTA curso Enem\">\n        <\/a>\n\n\n<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"Rea&ccedil;&otilde;es org&acirc;nicas s&atilde;o processos qu&iacute;micos que acontecem entre reagentes org&acirc;nicos, formando produtos que tamb&eacute;m possuem cadeias carb&ocirc;nicas. Elas&hellip;\n","protected":false},"author":23,"featured_media":87072,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[],"class_list":["post-87071","post","type-post","status-publish","format-standard","has-post-thumbnail","category-quimica"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Rea\u00e7\u00f5es org\u00e2nicas: o que s\u00e3o e classifica\u00e7\u00f5es<\/title>\n<meta name=\"description\" content=\"Rea\u00e7\u00f5es org\u00e2nicas s\u00e3o processos qu\u00edmicos que acontecem entre reagentes org\u00e2nicos, formando produtos carb\u00f4nicos. 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