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The reaction of ethanol with sodium metal produces
Aethyl chloride + NaOH
Bsodium ethoxide + hydrogen gas
Cdiethyl ether + NaH
Dethanal + sodium hydride
Answer & Solution
Correct answer: B. sodium ethoxide + hydrogen gas
1. NCERT §7.4 (Reactions): alcohols react with active metals like Na (or K, Al) to give the corresponding ALKOXIDE plus hydrogen gas.
2. The reaction is analogous to water + sodium → NaOH + ½H₂, but alcohols are WEAKER acids than water, so the reaction is calmer.
3. Balanced equation: $2\,\mathrm{CH_3CH_2OH} + 2\,\mathrm{Na} \to 2\,\mathrm{CH_3CH_2O^-Na^+} + \mathrm{H_2}\uparrow$.
4. Sodium ethoxide $\mathrm{CH_3CH_2ONa}$ is a strong base, widely used in organic synthesis (e.g. as a base in Claisen condensations, Williamson ether synthesis).
5. Options A, C, D describe different reactions (with HCl, with H$_2$SO$_4$ at 140°C, with PCC respectively) — not the reaction with Na metal.
_Source: NCERT Class 12 Chemistry Part 2, Ch 7, §7.4 (Alcohols + active metals), p. 9–10._
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