{"id":187713,"date":"2025-02-06T05:23:16","date_gmt":"2025-02-06T05:23:16","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=187713"},"modified":"2025-02-06T05:23:18","modified_gmt":"2025-02-06T05:23:18","slug":"the-reduction-of-3-pentanone-with-hydrogen-in-the-presence-of-a-nickel-catalyst-will-yield","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/02\/06\/the-reduction-of-3-pentanone-with-hydrogen-in-the-presence-of-a-nickel-catalyst-will-yield\/","title":{"rendered":"The Reduction Of 3-Pentanone With Hydrogen In The Presence Of A Nickel Catalyst Will Yield"},"content":{"rendered":"\n

The Reduction Of 3-Pentanone With Hydrogen In The Presence Of A Nickel Catalyst Will Yield <\/p>\n\n\n\n

2-Pentene. <\/p>\n\n\n\n

3-Pentanol <\/p>\n\n\n\n

Pentanaldehyde. <\/p>\n\n\n\n

Diethyl Alcohol <\/p>\n\n\n\n

Pentane<\/p>\n\n\n\n

The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n

The correct answer is 3-Pentanol<\/strong>.<\/p>\n\n\n\n

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

The reduction of 3-pentanone (C5_5H10_{10}O)<\/strong> with hydrogen (H2_2) in the presence of a nickel (Ni) catalyst<\/strong> follows a standard catalytic hydrogenation process. Let’s break it down step by step.<\/p>\n\n\n\n

1. Understanding 3-Pentanone:<\/strong><\/h4>\n\n\n\n

3-Pentanone is a ketone with the molecular formula C5_5H10_{10}O<\/strong>. Its structure is: CH3CH2COCH2CH3CH_3CH_2COCH_2CH_3<\/p>\n\n\n\n

This means the carbonyl (C=O) group<\/strong> is located at the third carbon.<\/p>\n\n\n\n

2. What Happens in Catalytic Hydrogenation?<\/strong><\/h4>\n\n\n\n
    \n
  • Hydrogenation is a reduction<\/strong> reaction, where hydrogen gas adds to the carbonyl group<\/strong>.<\/li>\n\n\n\n
  • In the presence of a nickel catalyst (which facilitates the breaking of H2_2 bonds), hydrogen atoms reduce the carbonyl (C=O) group<\/strong> to a hydroxyl (-OH) group.<\/li>\n\n\n\n
  • The ketone (3-pentanone) gets reduced to a secondary alcohol (3-pentanol)<\/strong>.<\/li>\n<\/ul>\n\n\n\n

    3. The Reaction:<\/strong><\/h4>\n\n\n\n

    CH3CH2COCH2CH3+H2\u2192NiCH3CH2CHOHCH2CH3CH_3CH_2COCH_2CH_3 + H_2 \\xrightarrow{Ni} CH_3CH_2CHOHCH_2CH_3<\/p>\n\n\n\n

    The C=O bond is converted into a C-OH bond<\/strong>, forming 3-pentanol (C5_5H12_{12}O)<\/strong>.<\/p>\n\n\n\n

    4. Why Not the Other Options?<\/strong><\/h4>\n\n\n\n
      \n
    • 2-Pentene<\/strong>: Requires elimination, not reduction.<\/li>\n\n\n\n
    • Pentanaldehyde (Pentanal)<\/strong>: Aldehydes are obtained from partial oxidation, not reduction of ketones.<\/li>\n\n\n\n
    • Diethyl alcohol (Ethanol)<\/strong>: Ethanol is unrelated to this reaction.<\/li>\n\n\n\n
    • Pentane<\/strong>: Complete hydrogenation of a ketone to an alkane is not typical under these conditions.<\/li>\n<\/ul>\n\n\n\n

      Thus, 3-Pentanol<\/strong> is the correct answer.<\/p>\n","protected":false},"excerpt":{"rendered":"

      The Reduction Of 3-Pentanone With Hydrogen In The Presence Of A Nickel Catalyst Will Yield 2-Pentene. 3-Pentanol Pentanaldehyde. Diethyl Alcohol Pentane The Correct Answer and Explanation is : The correct answer is 3-Pentanol. Explanation: The reduction of 3-pentanone (C5_5H10_{10}O) with hydrogen (H2_2) in the presence of a nickel (Ni) catalyst follows a standard catalytic hydrogenation […]<\/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-187713","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/187713","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=187713"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/187713\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=187713"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=187713"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=187713"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}