Question

Assertion (A): Ethanoic acid is also known as glacial acetic acid.
Reason (R): The melting point of pure ethanoic acid is 290 K and hence
it often freezes during winters in cold climates.
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Answer 1

Answer:

On cooling, pure ethanoic acid freezes to form flakes like ice. Since, it forms ice like crystals, that's why it is called glacial acetic acid. It's called glacial because it solidifies into acetic acid crystals at a temperature of 16.7° C.

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