{"id":148889,"date":"2024-02-27T17:01:52","date_gmt":"2024-02-27T11:31:52","guid":{"rendered":"https:\/\/www.mapsofindia.com\/my-india\/?p=148889"},"modified":"2024-02-27T17:01:52","modified_gmt":"2024-02-27T11:31:52","slug":"which-compound-in-the-given-pair-would-undergo-s2-reaction-at-a","status":"publish","type":"post","link":"https:\/\/www.mapsofindia.com\/my-india\/quiz\/which-compound-in-the-given-pair-would-undergo-s2-reaction-at-a","title":{"rendered":"Which compound in the given pair would undergo S~2 reaction at a&#8230;"},"content":{"rendered":"<h2>Which compound in the given pair would undergo S~2 reaction at a faster rate and why?<br \/>\nCH3 \u2013 CH2 \u2013 I and CH3 \u2013 CH2 \u2013 Br<\/h2>\n<h3>Ans.\u00a0 In the S&lt;sup&gt;2&lt;\/sup&gt; (bimolecular nucleophilic substitution) reaction, the rate is largely dependent on the stability of the transition state, which in turn is influenced by the strength of the carbon-halogen bond being broken.<\/h3>\n<h3>The rate of an S&lt;sup&gt;2&lt;\/sup&gt; reaction is generally faster when the carbon-halogen bond is weaker. The carbon-halogen bond strength decreases in the order of C-F &gt; C-Cl &gt; C-Br &gt; C-I due to the decrease in electronegativity of the halogen atom.<\/h3>\n<h3>Comparing CH&lt;sub&gt;3&lt;\/sub&gt;\u2013CH&lt;sub&gt;2&lt;\/sub&gt;\u2013I and CH&lt;sub&gt;3&lt;\/sub&gt;\u2013CH&lt;sub&gt;2&lt;\/sub&gt;\u2013Br, the carbon-iodine bond in CH&lt;sub&gt;3&lt;\/sub&gt;\u2013CH&lt;sub&gt;2&lt;\/sub&gt;\u2013I is weaker than the carbon-bromine bond in CH&lt;sub&gt;3&lt;\/sub&gt;\u2013CH&lt;sub&gt;2&lt;\/sub&gt;\u2013Br. This is because iodine is larger and less electronegative than bromine, leading to a weaker bond.<\/h3>\n<h3>Therefore, CH&lt;sub&gt;3&lt;\/sub&gt;\u2013CH&lt;sub&gt;2&lt;\/sub&gt;\u2013I would undergo an S&lt;sup&gt;2&lt;\/sup&gt; reaction at a faster rate compared to CH&lt;sub&gt;3&lt;\/sub&gt;\u2013CH&lt;sub&gt;2&lt;\/sub&gt;\u2013Br.<\/h3>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Which compound in the given pair would undergo S~2 reaction at a faster rate and why? CH3 \u2013 CH2 \u2013 I and CH3 \u2013 CH2 \u2013 Br Ans.\u00a0 In the S&lt;sup&gt;2&lt;\/sup&gt; (bimolecular nucleophilic substitution) reaction, the rate is largely dependent on the stability of the transition state, which in turn is influenced by the strength [&hellip;]<\/p>\n","protected":false},"author":21830,"featured_media":114041,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12119],"tags":[],"class_list":{"0":"post-148889","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-quiz"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/posts\/148889","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/users\/21830"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/comments?post=148889"}],"version-history":[{"count":1,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/posts\/148889\/revisions"}],"predecessor-version":[{"id":148890,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/posts\/148889\/revisions\/148890"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/media\/114041"}],"wp:attachment":[{"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/media?parent=148889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/categories?post=148889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/tags?post=148889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}