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AP EAMCET2006ChemistryAldehydes and Ketones

When acetaldehyde is heated with Fehling solution, a red precipitate is formed. Which of the following is that?

Options

  1. ACu ₂ O
  2. BCu
  3. CCuO
  4. DCuSO ₄

Correct answer

A. Cu ₂ O

Step-by-step solution

When acetaldehyde is heated with Fehling solution, a red precipitate of Cu ₂ O is obtained. CH ₃ CHO +2 Cu ( OH )₂+ NaOH CH ₃ COONa + Cu ₂ O (Red)+3 H ₂ O

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