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Question

Chemistry Question on Aldehydes, Ketones and Carboxylic Acids

At higher temperature, iodoform reaction is given by

A

CH3CO2CH3CH _{3} CO _{2} CH _{3}

B

CH3CO2C2H5CH _{3} CO _{2} C _{2} H _{5}

C

C6H5CO2CH3C _{6} H _{5} CO _{2} CH _{3}

D

CH3CO2C6H5CH _{3} CO _{2} C _{6} H _{5}

Answer

CH3CO2C2H5CH _{3} CO _{2} C _{2} H _{5}

Explanation

Solution

Only CH3COOC2H5CH_3COOC_2H_5 will give ethanol, C2H5OHC_2H_5OH after hydrolysis (which can give positive iodoform test). CH3COOCH3>CH3COOH+CH3OH {CH3COOCH3 -> CH3COOH + CH3OH} CH3COOC2H5>CH3COOH+CH3CH2OH {CH3COOC2H5 -> CH3COOH + CH3CH2OH} C6H5COOCH3>C6H5COOH+CH3OH {C6H5COOCH3 -> C6H5COOH + CH3OH} CH3COOC6H5>CH3COOH+C6H5OH { CH3COOC6H5-> CH3COOH + C6H5OH}