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Byju's Answer

Standard XII

Chemistry

Stoichiometry

An alcohol ...

Question

An alcohol $A (C_{4} H_{10} O)$ on oxidation with acidified potassium dichromate gives carboxylic acid $B$ $(C_{4} H_{8} O_{2})$ . Compound A when dehydrated with conc. $H_{2} S O_{4}$ gives compound $D (C_{4} H_{10} O)$ which is an isomer of $A$ . Compound $D$ is resistant to oxidation but compound $A$ can be easily oxidised. Identify $A, B, C$ and $D$ and write their structures.

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Solution

$A$ must be $(C H_{3})_{2} C H C H_{2} O H$ which on oxidation give $B$ which is $(C H_{3})_{2} C H - C O O H$ .

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A must be (CH3)2CHCH2OH which on oxidation give B which is (CH3)2CH−COOH.

$A$ must be $(C H_{3})_{2} C H C H_{2} O H$ which on oxidation give $B$ which is $(C H_{3})_{2} C H - C O O H$ .