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Which balanced chemical equation show the formation of ethonyl chloride using thionyl chloride?

Correct answer: D. CH3COOH + SOCl2 -> CH3COCl + SO2 + HCI

  • A. HCOOH + SOCl2 -> HCOCI + SO2 + HCI
  • B. CH3CH2COOH + 2SOCl -> CH3CH2COCl + SO2 + HCI
  • C. CH3CH2COOH + 2SOCl -> CH3CH2COC1 + SO3 + HCI
  • D. CH3COOH + SOCl2 -> CH3COCl + SO2 + HCI

Explanation

Thionyl chloride is SOCl2 and it reacts with carboxylic acids to form acyl chlorides.Options B and C do not involve thionyl chloride, it mentions SOCl instead of SOCl2 so, they are incorrect.Options A and D are both valid reactions involving thionyl chloride. However, the question asks for the formation of ethanoyl chloride. Option A shows the formation of METHANOYL Chloride, whereby D shows ethanoyl chloride formation so, D is the correct answer.

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About Carboxylic Acid Derivatives

Carboxylic acid derivatives include acid halides, acid anhydrides, esters and amides, formed by replacing the hydroxyl group of a carboxylic acid. Their nomenclature, structures, preparation, hydrolysis and relative reactivity are linked through nucleophilic acyl substitution, which differs from the nucleophilic addition reactions of aldehydes and ketones.

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