{"id":210668,"date":"2025-05-03T08:27:43","date_gmt":"2025-05-03T08:27:43","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=210668"},"modified":"2025-05-03T08:27:46","modified_gmt":"2025-05-03T08:27:46","slug":"which-of-the-following-conformations-of-butane-will-be-the-most-stable","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/03\/which-of-the-following-conformations-of-butane-will-be-the-most-stable\/","title":{"rendered":"Which of the following conformations of butane will be the most stable"},"content":{"rendered":"\n<p>Which of the following conformations of butane will be the most stable?<\/p>\n\n\n\n<p>Choices:<br>A. A gauche conformation<br>B. An eclipsed conformation<br>C. The anti conformation<br>D. None of the above<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>The correct answer is: <strong>The anti conformation<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>Butane (C\u2084H\u2081\u2080) is a straight-chain alkane composed of four carbon atoms. When examining the <strong>conformations<\/strong> of butane, we focus primarily on the <strong>rotation about the central carbon-carbon single bond (C2\u2013C3)<\/strong>. The spatial arrangement of the atoms around this bond leads to different conformations, which vary in their stability due to <strong>steric hindrance and torsional strain<\/strong>.<\/p>\n\n\n\n<p>There are three primary types of conformations for butane:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Anti conformation<\/strong>:\n<ul class=\"wp-block-list\">\n<li>In this staggered conformation, the two methyl groups (\u2013CH\u2083) are positioned 180\u00b0 apart.<\/li>\n\n\n\n<li>This is the <strong>most stable conformation<\/strong> of butane.<\/li>\n\n\n\n<li>It has the lowest energy because it minimizes both <strong>torsional strain<\/strong> and <strong>steric hindrance<\/strong>, as the bulky methyl groups are as far apart as possible.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Gauche conformation<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Also a staggered conformation, but the methyl groups are 60\u00b0 apart.<\/li>\n\n\n\n<li>It is less stable than the anti conformation because of <strong>steric strain<\/strong> resulting from the proximity of the two bulky methyl groups.<\/li>\n\n\n\n<li>Gauche interactions slightly raise the energy of the molecule compared to anti.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Eclipsed conformation<\/strong>:\n<ul class=\"wp-block-list\">\n<li>In this conformation, atoms on adjacent carbons are directly aligned, resulting in the highest torsional strain.<\/li>\n\n\n\n<li>It has the <strong>highest energy<\/strong> and is therefore the <strong>least stable<\/strong>.<\/li>\n\n\n\n<li>Specifically, when the two methyl groups eclipse each other, the steric hindrance is greatest.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>Therefore, among the given options, <strong>the anti conformation is the most stable<\/strong> due to its optimal spatial arrangement that minimizes repulsion between atoms.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Summary:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Anti conformation<\/strong>: Most stable (lowest energy)<\/li>\n\n\n\n<li><strong>Gauche conformation<\/strong>: Less stable than anti<\/li>\n\n\n\n<li><strong>Eclipsed conformation<\/strong>: Least stable (highest energy)<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following conformations of butane will be the most stable? Choices:A. A gauche conformationB. An eclipsed conformationC. The anti conformationD. None of the above The Correct Answer and Explanation is: The correct answer is: The anti conformation Explanation: Butane (C\u2084H\u2081\u2080) is a straight-chain alkane composed of four carbon atoms. When examining the conformations [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-210668","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/210668","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=210668"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/210668\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=210668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=210668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=210668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}