Wurtz Reaction Quiz
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Questions and Answers

What is the main purpose of the Wurtz reaction?

  • Formation of ethers
  • Conversion of alkenes
  • Synthesis of alcohols
  • Preparation of alkanes (correct)
  • In the Wurtz reaction, what role does sodium metal play?

  • Solvent
  • Catalyst
  • Reducing agent (correct)
  • Oxidizing agent
  • Why is dry ether used as a solvent in the Wurtz reaction?

  • To enhance the reaction rate
  • To increase the solubility of the reagents
  • To stabilize the alkane product
  • To prevent side reactions (correct)
  • What kind of alkyl halides are preferred for the Wurtz reaction?

    <p>Primary alkyl halides</p> Signup and view all the answers

    Why is the Wurtz reaction not suitable for preparing alkanes with an odd number of carbon atoms?

    <p>Due to steric hindrance</p> Signup and view all the answers

    What is the most common type of catalyst used in the hydrogenation process to convert carboxylic acids into alkanes?

    <p>Palladium or nickel supported on carbon</p> Signup and view all the answers

    Which of the following reactions is involved in the direct hydrogenation of carboxylic acids to generate alkanes?

    <p>Reduction of COOH group to COH</p> Signup and view all the answers

    What is the role of the catalyst in the direct hydrogenation of carboxylic acids?

    <p>To facilitate the formation of a stable metal-oxygen intermediate</p> Signup and view all the answers

    What is the primary purpose of decarboxylation in the hydrogenation process?

    <p>To remove COOH group from carboxylic acids</p> Signup and view all the answers

    What is the significance of water splitting in a hydrogenative reaction during the conversion of carboxylic acids into alkanes?

    <p>It generates hydrogen atoms for decarboxylation</p> Signup and view all the answers

    Why is it beneficial to start with more complex molecules like carboxylic acids when producing alkanes?

    <p>Carboxylic acids enable direct formation of alkanes without intermediates</p> Signup and view all the answers

    What is the role of mineral acids, such as sulfuric acid, in the initial steps of converting carboxylic acids to alkanes?

    <p>They promote dehydration to form alkenes.</p> Signup and view all the answers

    What effect does an increase in hydrogen pressure have on the production of alkanes from olefins?

    <p>It can lead to subsequent protonation and hydrogenation to form alkanes.</p> Signup and view all the answers

    Why is catalytic hydrogenation preferred over noncatalytic methods for converting carboxylic acids to alkanes?

    <p>It offers better selectivity and higher product yield.</p> Signup and view all the answers

    What potential issue arises when using noncatalytic methods involving solid powders for hydrogenation of carboxylic acids?

    <p>Longer reaction times and lower yields compared to catalytic approaches.</p> Signup and view all the answers

    What contributes to the environmentally friendly aspect of catalytic hydrogenation compared to alternative synthetic routes?

    <p>Formation of less waste products.</p> Signup and view all the answers

    In terms of performance, why is catalytic hydrogenation often preferable when synthesizing alkanes from carboxylic acids?

    <p>It allows for higher product yield and selectivity.</p> Signup and view all the answers

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