When $C H_{2} = C H - O - C_{2} H_{5}$ react with one mole of $H I$ , one of the products formed is:

ethanal

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ethanol

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ethane

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none of these

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Solution

The correct option is B ethanal
When $C H_{2} = C H - O - C_{2} H_{5}$ react with one mole of $H I$ , vinyl alcohol is obtained.
$C H_{2} = C H - O - C_{2} H_{5} + H - I \to C H_{2} = C H - O H + I - C_{2} H_{5}$
Vinyl alcohol tautomerizes to acetaldehyde.
$C H_{2} = C H - O H ⇌ C H_{3} C H O$

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