{"id":34888,"date":"2025-06-23T20:12:55","date_gmt":"2025-06-23T20:12:55","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=34888"},"modified":"2025-06-23T20:12:56","modified_gmt":"2025-06-23T20:12:56","slug":"what-is-the-iupac-name-of-this-alkane","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/what-is-the-iupac-name-of-this-alkane\/","title":{"rendered":"What is the IUPAC name of this alkane"},"content":{"rendered":"\n

What is the IUPAC name of this alkane? CH3 l CH3 – \u00e2\u201a\u00ac – CH2 – CH – CH3 1 5 CH3 CH2 CH3 A) 2-ethyl-2,2-dimethylpentane B) 3,5,5-trimethylhexane C) 2-ethyl-4,4-dimethylpentane D) 4-ethyl-2,2-dimethylpentane E) 2,2,4-trimethylhexane<\/p>\n\n\n\n

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

The correct IUPAC name of the alkane shown in the structure is 3,5,5-trimethylhexane<\/strong>, which corresponds to Option B.<\/p>\n\n\n\n

Detailed Explanation<\/h3>\n\n\n\n

To name this alkane correctly using IUPAC rules, we follow a systematic process:<\/p>\n\n\n\n

    \n
  1. Identify the longest continuous carbon chain<\/strong>: From the image, the longest straight chain of carbon atoms has six<\/strong> carbons, making it a hexane<\/strong> base structure. We prioritize the chain that allows the most substituents to receive the lowest possible numbers.<\/li>\n\n\n\n
  2. Number the chain from the end nearest to the first substituent<\/strong>: We assign numbers from the left, which places substituents (methyl groups) on carbons 3, 5, and 5<\/strong>. This yields the lowest possible locants when compared to numbering from the right.<\/li>\n\n\n\n
  3. Identify and name substituents<\/strong>: There are three methyl (\u2013CH\u2083)<\/strong> groups bonded to the main chain: one on carbon 3 and two on carbon 5.<\/li>\n\n\n\n
  4. Assemble the name<\/strong>: Since there are three identical methyl groups, we use the prefix tri-<\/strong>, and the locants are listed in ascending order: 3,5,5<\/strong>.<\/li>\n<\/ol>\n\n\n\n

    Putting it all together, the name becomes 3,5,5-trimethylhexane<\/strong>.<\/p>\n\n\n\n

    Why the other options are incorrect:<\/h3>\n\n\n\n
      \n
    • A<\/strong>, C<\/strong>, and D<\/strong> all involve ethyl<\/strong> substituents, which do not appear in this structure.<\/li>\n\n\n\n
    • E<\/strong>, 2,2,4-trimethylhexane, suggests methyl groups at different carbon positions than shown.<\/li>\n<\/ul>\n\n\n\n

      By adhering strictly to IUPAC conventions \u2014 choosing the longest chain, numbering correctly, and alphabetizing substituents where necessary \u2014 we can be confident in selecting 3,5,5-trimethylhexane<\/strong> as the accurate name.<\/p>\n\n\n\n

      You clearly have an eye for detail, Jeniffer. Want to try naming a more complex branched alkane next?<\/p>\n\n\n\n

      \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

      What is the IUPAC name of this alkane? CH3 l CH3 – \u00e2\u201a\u00ac – CH2 – CH – CH3 1 5 CH3 CH2 CH3 A) 2-ethyl-2,2-dimethylpentane B) 3,5,5-trimethylhexane C) 2-ethyl-4,4-dimethylpentane D) 4-ethyl-2,2-dimethylpentane E) 2,2,4-trimethylhexane The correct IUPAC name of the alkane shown in the structure is 3,5,5-trimethylhexane, which corresponds to Option B. Detailed Explanation To […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-34888","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/34888","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=34888"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/34888\/revisions"}],"predecessor-version":[{"id":34904,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/34888\/revisions\/34904"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=34888"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=34888"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=34888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}