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AP EAMCET2006Chemistryd and f Block Elements

When compound X is oxidised by acidified potassium dichromate, compound Y is formed. Compound Y on reduction with LiAlH ₄ gives X . X and Y respectively are :

Options

  1. AC ₂ H ₅ OH , CH ₃ COOH
  2. BCH ₃ COCH ₃, CH ₃ COOH
  3. CC ₂ H ₅ OH , CH ₃ COCH ₃
  4. DCH ₃ CHO , CH ₃ COCH ₃

Correct answer

A. C ₂ H ₅ OH , CH ₃ COOH

Step-by-step solution

When ethyl alcohol is oxidised by acidified potassium dichromate, CH ₃ COOH ( Y ) is obtained as : 3 C ₂ H ₅ OH (X)+2 ~K ₂ Cr ₂ O ₇+8 H ₂ SO ₄ 3 CH ₃ COOH (Y)+2 Cr ₂ ( SO ₄ )₃+2 ~K ₂ SO ₄+11 H ₂ O Carboxylic acid undergo reduction with LiAlH ₄ to give primary alcohol as So, X is CH ₃ CH ₂ OH and Y is CH ₃ COOH

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