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In the reaction CH₃ | CH₃—CH₂—O—CH₂—CH₃ + HI → Heated, which of the following compounds will be formed?

1. CH₃—CH—CH₃ + CH₃CH₂OH
2. CH₃—CH—CH₂OH + CH₃CH₃
3. CH₃—CH—CH₂OH + CH₃—CH₂—I
4. CH₃—CH₂—I + CH₃CH₂OH

Correct answer: CH₃—CH₂—I + CH₃CH₂OH

Solution

The reaction involves cleavage of the ether bond by HI, producing ethyl iodide (CH₃—CH₂—I) and ethanol (CH₃CH₂OH). This is a typical reaction of ethers with hydrogen halides.

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