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Question

Methyl alcohol when reacted with carbon monoxide using cobalt or rhodium as catalyst , compound ′A′ is formed. ′A′ on heating with HI in the presence of red phosphorus as catalyst ′B′ is formed. ′B′ is:

A
CH3COOH
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B
CH3CHO
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C
CH3CH2I
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D
CH3CH3
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Solution

The correct option is D CH3CH3
CH3OH+COCO/Rh−−−−−−−−−−(HighPressure)CH3COOHCompoundA
Alcohol with carbon monoxide in presence of CO/Rh gives carboxylic Acid.
CH3COOHRedP+HI−−−−−−−−CH3CH3
RedP+HI is areducing agent and reduces carboxylic acid into hydrocarbons.

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