{"id":196556,"date":"2025-03-05T09:29:41","date_gmt":"2025-03-05T09:29:41","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=196556"},"modified":"2025-03-05T09:29:44","modified_gmt":"2025-03-05T09:29:44","slug":"what-physical-property-is-identical-for-the-isomers-of-ch12-organic-compounds","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/05\/what-physical-property-is-identical-for-the-isomers-of-ch12-organic-compounds\/","title":{"rendered":"What physical property is identical for the isomers of C,H12 Organic Compounds"},"content":{"rendered":"\n

What physical property is identical for the isomers of C,H12 Organic Compounds:<\/p>\n\n\n\n

The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n

The physical property that is identical for all isomers of C\u2085H\u2081\u2082<\/strong> (pentane isomers) is molar mass<\/strong>.<\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n

Pentane (C\u2085H\u2081\u2082) has three structural isomers:<\/p>\n\n\n\n

    \n
  1. n-Pentane<\/strong> (a straight-chain hydrocarbon)<\/li>\n\n\n\n
  2. Isopentane<\/strong> (also known as 2-methylbutane, a branched-chain hydrocarbon)<\/li>\n\n\n\n
  3. Neopentane<\/strong> (also known as 2,2-dimethylpropane, a highly branched hydrocarbon)<\/li>\n<\/ol>\n\n\n\n

    Despite differences in their structures, these isomers share the same molecular formula<\/strong>, meaning they contain the same number of carbon (C) and hydrogen (H) atoms<\/strong>. As a result, their molar mass<\/strong> remains constant at 72.15 g\/mol<\/strong>.<\/p>\n\n\n\n

    Why Molar Mass is Identical?<\/h3>\n\n\n\n

    Molar mass is determined solely by the sum of the atomic masses of all atoms in a molecule. Since all three isomers have the same atoms in the same proportions, their molar mass is identical.<\/p>\n\n\n\n

    What Physical Properties Change?<\/h3>\n\n\n\n

    While molar mass remains the same, other physical properties such as boiling point, melting point, and density<\/strong> differ due to variations in molecular structure. For example:<\/p>\n\n\n\n

      \n
    • n-Pentane<\/strong> has the highest boiling point (~36\u00b0C) due to stronger intermolecular forces.<\/li>\n\n\n\n
    • Neopentane<\/strong> has the lowest boiling point (~9.5\u00b0C) because of its compact, spherical shape, leading to weaker van der Waals forces.<\/li>\n<\/ul>\n\n\n\n

      Thus, molar mass is the one fundamental physical property that remains identical across all isomers<\/strong> of C\u2085H\u2081\u2082.<\/p>\n\n\n\n

      Here\u2019s an image illustrating the structures of pentane isomers:<\/p>\n\n\n\n

      \"\"<\/figure>\n\n\n\n

      Here is the scientific illustration of the three structural isomers of C\u2085H\u2081\u2082 (pentane). The image shows the molecular structures of n-pentane, isopentane (2-methylbutane), and neopentane (2,2-dimethylpropane)<\/strong> with clear labeling. Let me know if you need any modifications or further explanations!<\/p>\n","protected":false},"excerpt":{"rendered":"

      What physical property is identical for the isomers of C,H12 Organic Compounds: The correct answer and explanation is : The physical property that is identical for all isomers of C\u2085H\u2081\u2082 (pentane isomers) is molar mass. Explanation: Pentane (C\u2085H\u2081\u2082) has three structural isomers: Despite differences in their structures, these isomers share the same molecular formula, meaning […]<\/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-196556","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/196556","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=196556"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/196556\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=196556"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=196556"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=196556"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}