{"id":210233,"date":"2025-04-30T06:56:47","date_gmt":"2025-04-30T06:56:47","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=210233"},"modified":"2025-04-30T06:56:48","modified_gmt":"2025-04-30T06:56:48","slug":"what-is-the-iupac-name-of-the-following-compound-2","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/04\/30\/what-is-the-iupac-name-of-the-following-compound-2\/","title":{"rendered":"What is the IUPAC name of the following compound"},"content":{"rendered":"\n

What is the IUPAC name of the following compound?<\/p>\n\n\n\n

A. 5-ethyl-3-1-methylethyl)heptane
B. 2-methyl-3-ethyl-5-ethylheptane
C. 3,5-diethyl-2-methylheptane
D. 2-methyl-3,5-diethylheptane<\/p>\n\n\n\n

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

The correct IUPAC name of the compound is:
D. 2-methyl-3,5-diethylheptane<\/strong><\/p>\n\n\n\n

\n\n\n\n

Explanation (Approx. 300 words):<\/h3>\n\n\n\n

To determine the IUPAC name of an organic compound, particularly an alkane with substituents, we follow a systematic nomenclature procedure as per IUPAC rules:<\/p>\n\n\n\n

Step 1: Identify the Longest Continuous Carbon Chain<\/strong><\/h4>\n\n\n\n
    \n
  • The main chain must be the longest unbroken chain of carbon atoms. In this case, it’s a heptane<\/strong> (7 carbon atoms).<\/li>\n<\/ul>\n\n\n\n

    Step 2: Number the Carbon Chain<\/strong><\/h4>\n\n\n\n
      \n
    • The carbon atoms in the main chain should be numbered such that the substituents receive the lowest possible numbers<\/strong>.<\/li>\n\n\n\n
    • Suppose the chain is numbered from left to right: the methyl group is on carbon 2, and ethyl groups are on carbons 3 and 5.<\/li>\n<\/ul>\n\n\n\n

      Step 3: Identify and Name the Substituents<\/strong><\/h4>\n\n\n\n
        \n
      • Methyl group (\u2013CH\u2083) on carbon 2<\/li>\n\n\n\n
      • Ethyl groups (\u2013CH\u2082CH\u2083) on carbons 3 and 5<\/li>\n<\/ul>\n\n\n\n

        Step 4: Combine the Substituents with the Base Name<\/strong><\/h4>\n\n\n\n
          \n
        • When multiple identical substituents exist (like two ethyl groups), we use prefixes: di-, tri-, etc.<\/strong><\/li>\n\n\n\n
        • Alphabetize the substituents for correct ordering in the name:<\/li>\n\n\n\n
        • Ethyl (starts with \u2018E\u2019) comes before Methyl (starts with \u2018M\u2019), even if methyl has the lower number.<\/li>\n<\/ul>\n\n\n\n

          Step 5: Assemble the Full IUPAC Name<\/strong><\/h4>\n\n\n\n
            \n
          • Ethyl groups at positions 3 and 5 \u2192 3,5-diethyl<\/strong><\/li>\n\n\n\n
          • Methyl group at position 2 \u2192 2-methyl<\/strong><\/li>\n\n\n\n
          • Parent chain \u2192 heptane<\/strong><\/li>\n<\/ul>\n\n\n\n

            Putting it all together, and ordering substituents alphabetically:
            2-methyl-3,5-diethylheptane<\/strong><\/p>\n\n\n\n

            Why Not the Other Options?<\/strong><\/h4>\n\n\n\n
              \n
            • A.<\/strong> Contains incorrect and unclear substituent naming.<\/li>\n\n\n\n
            • B.<\/strong> Lists ethyl three times, which is redundant and not systematic.<\/li>\n\n\n\n
            • C.<\/strong> Has the correct components but incorrect ordering (methyl should come after ethyl alphabetically, not first).<\/li>\n<\/ul>\n\n\n\n

              Thus, Option D<\/strong> follows all IUPAC naming rules correctly. Would you like a structural diagram to visualize it?<\/p>\n","protected":false},"excerpt":{"rendered":"

              What is the IUPAC name of the following compound? A. 5-ethyl-3-1-methylethyl)heptaneB. 2-methyl-3-ethyl-5-ethylheptaneC. 3,5-diethyl-2-methylheptaneD. 2-methyl-3,5-diethylheptane The correct answer and explanation is : The correct IUPAC name of the compound is:D. 2-methyl-3,5-diethylheptane Explanation (Approx. 300 words): To determine the IUPAC name of an organic compound, particularly an alkane with substituents, we follow a systematic nomenclature procedure as […]<\/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-210233","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/210233","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=210233"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/210233\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=210233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=210233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=210233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}