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The compound A on treatment with Na gives B, and with PCl₃ gives C. B and C react together to give diethyl ether. A, B and C are in the order

1. C₂H₅OH, C₂H₆, C₂H₅Cl
2. C₂H₅OH, C₂H₅Cl, C₂H₅ONa
3. C₂H₅OH, C₂H₅ONa, C₂H₅Cl
4. C₂H₅Cl, C₂H₆, C₂H₅OH

Correct answer: C₂H₅OH, C₂H₅ONa, C₂H₅Cl

Solution

Compound A is ethanol (C₂H₅OH). When treated with Na, it forms sodium ethoxide (C₂H₅ONa), and with PCl₃, it forms ethyl chloride (C₂H₅Cl). Sodium ethoxide and ethyl chloride react to form diethyl ether. Thus, the correct order is C₂H₅OH, C₂H₅ONa, C₂H₅Cl.

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