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Study the Assertion and Reason and choose the correct option.
Methoxy ethane reacts with HI at 373 K to give ethanol and iodomethane.
Assertion: Methoxy ethane reacts with $\text{HI}$ at $373\text{ K}$ to give ethanol and iodomethane.
Reason: Reaction of unsymmetrical ether with $\text{HI}$ follows $\text{S}_\text{N}2$ mechanism.
- (a)Both Assertion and Reason are true and Reason is the correct explanation for Assertion.
- (b)Both Assertion and Reason are true but Reason is not the correct explanation for Assertion.
- (c)Assertion is true and Reason is false.
- (d)Both Assertion and Reason are false.
Answer
Answer
Official answer keyCorrect option: (a)
Answer: (a) Both Assertion and Reason are true and Reason is the correct explanation for Assertion.
In an unsymmetrical ether with primary alkyl groups, $\mathrm{I^-}$ attacks the smaller alkyl group by the $\mathrm{S_N2}$ route, giving $\mathrm{CH_3I}$ and $\mathrm{C_2H_5OH}$.