{"id":205714,"date":"2025-03-25T10:48:29","date_gmt":"2025-03-25T10:48:29","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=205714"},"modified":"2025-03-25T10:48:31","modified_gmt":"2025-03-25T10:48:31","slug":"the-substance-with-the-largest-heat-of-vaporization-is","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/25\/the-substance-with-the-largest-heat-of-vaporization-is\/","title":{"rendered":"The substance with the largest heat of vaporization is"},"content":{"rendered":"\n<p>The substance with the largest heat of vaporization is <\/p>\n\n\n\n<p>A) Br2 <\/p>\n\n\n\n<p>B) Cl2 <\/p>\n\n\n\n<p>C) F2 <\/p>\n\n\n\n<p>D) 12 <\/p>\n\n\n\n<p>E) O2<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n<p>The correct answer is <strong>D) I\u2082 (Iodine)<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>The <strong>heat of vaporization<\/strong> (also called <strong>enthalpy of vaporization<\/strong>) is the amount of energy required to convert a substance from a liquid (or solid, in the case of sublimation) to a gas at constant pressure. The magnitude of this value depends on the intermolecular forces within the substance. Stronger intermolecular forces result in a higher heat of vaporization.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. <strong>Nature of Intermolecular Forces in the Given Substances<\/strong><\/h4>\n\n\n\n<p>The substances listed in the options (Br\u2082, Cl\u2082, F\u2082, I\u2082, and O\u2082) are all <strong>diatomic molecules<\/strong> with nonpolar covalent bonds. Their intermolecular forces are <strong>London dispersion forces (LDFs)<\/strong>, which arise due to temporary dipoles created by electron movement. The strength of these dispersion forces depends on the <strong>molecular size and polarizability<\/strong>\u2014larger atoms\/molecules have <strong>stronger<\/strong> dispersion forces because their electrons are more easily distorted.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2. <strong>Trends in Heat of Vaporization<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Fluorine (F\u2082) and Oxygen (O\u2082)<\/strong>: These molecules are small, have weak dispersion forces, and therefore have <strong>low heats of vaporization<\/strong>.<\/li>\n\n\n\n<li><strong>Chlorine (Cl\u2082)<\/strong>: Larger than F\u2082 and O\u2082, meaning stronger dispersion forces and a higher heat of vaporization.<\/li>\n\n\n\n<li><strong>Bromine (Br\u2082)<\/strong>: Even larger than Cl\u2082, so it has stronger dispersion forces and a higher heat of vaporization.<\/li>\n\n\n\n<li><strong>Iodine (I\u2082)<\/strong>: The largest molecule in the group, with the strongest dispersion forces and the <strong>highest heat of vaporization<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p>Since <strong>I\u2082<\/strong> has the largest molecular size and strongest intermolecular forces, it requires the most energy to transition into the gas phase. Therefore, <strong>I\u2082 has the largest heat of vaporization among the given choices<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/03\/image-1392.png\" alt=\"\" class=\"wp-image-205715\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The substance with the largest heat of vaporization is A) Br2 B) Cl2 C) F2 D) 12 E) O2 The correct answer and explanation is : The correct answer is D) I\u2082 (Iodine). Explanation: The heat of vaporization (also called enthalpy of vaporization) is the amount of energy required to convert a substance from a [&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-205714","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/205714","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=205714"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/205714\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=205714"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=205714"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=205714"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}