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KCET2014ChemistryChemical Bonding and Molecular Structure

lodoform reaction is answered by all, except

Options

  1. A( CH ₃ CHO )
  2. B(1) ( CH ₃- CH ₂- CH ₂ OH )
  3. C( CH ₃- CH ₂- OH )

Correct answer

B. (1) ( CH ₃- CH ₂- CH ₂ OH )

Step-by-step solution

For alcohols secondary and tertiary alcohols gives iodoform reaction and ethanol is the only primary alcohol which gives iodoform reaction, therefore, propanol will not give iodoform reaction. (1) ( Acetaldehyde C ₃ CH O +3 NaOI Yellow ppt CH + ) HCOON ( a+2 NaOH ) (2) ( array c Acetaldehyde CH ₃ CH ₂ CH ₂ OH array + NaOI ₂- NaOH _ S ₂ > ) do not give iodoform reaction. (3) ( CH ₃- OH CH - CH ₂ COOH ) NaOI ( Yellowppt. CHI ₃ + NaOCCH ₂ COOH ) ( CH ₃ CH ₂ OH - NaOH _ I ₂ CH ₃ CHO + NaI + H ₂ O ) ( CH ₃ CHO +3 NaOI C

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