Multiple choice

When we heat oxalic acid, then it gives ____

  1. Formic acid

  2. Acetic acid

  3. H2SO4

  4. Ethanoic acid

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A Correct answer
Explanation

When oxalic acid is heated, it decomposes through decarboxylation to form formic acid (HCOOH) and carbon dioxide. This is a well-known thermal decomposition reaction. Acetic acid, sulfuric acid, and ethanoic acid (another name for acetic acid) are not products of this reaction.

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