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When ethanol reacts with sodium metal, one of the products is
A{'text': 'Sodium ethanoate + H₂', 'label': 'A'}
B{'text': 'Sodium ethoxide + hydrogen gas', 'label': 'B'}
C{'text': 'Ethyl chloride + Na', 'label': 'C'}
D{'text': 'Water only', 'label': 'D'}
Answer & Solution
Correct answer: B. {'text': 'Sodium ethoxide + hydrogen gas', 'label': 'B'}
1. Sodium reacts with the −OH group of alcohols like ethanol.
2. 2 CH₃CH₂OH + 2 Na → 2 CH₃CH₂O⁻Na⁺ + H₂ (up).
3. Product is sodium ethoxide and hydrogen gas is released.
4. This is a test for alcohols (bubbles of H₂ observed).
_Source: NCERT Class 10 Science, Ch 4 "Carbon and its Compounds", §4.2.4_
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