What functional group is formed by the reduction of a Carboxylic acid with Lithium Aluminium Hydride (LiAlH4)?
Answer and explanation
Correct answer: C. Primary alcohol (-CH2-OH)
- Step 1: LiAlH4 is a powerful reducing agent that donates hydride ions to carbonyl carbons. Step 2. Carboxylic acids (R-COOH) are reduced completely past the aldehyde stage to yield primary alcohols (R-CH2-OH). Answer: Primary alcohol (-CH2-OH). Why not the others: Secondary alcohol requires reduction of a ketone; aldehyde is an intermediate that cannot be isolated with LiAlH4; alkane requires Clemmensen or Wolff-Kishner reduction.
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