When ethane-1,2-dioic acid is heated with concentrated H ₂ SO ₄ , the products formed are:

Step-by-step solution

Ethane-1,2-dioic acid is commonly known as oxalic acid, HOOC-COOH . Concentrated H ₂ SO ₄ acts as a strong dehydrating agent. When oxalic acid is heated with concentrated H ₂ SO ₄ , it undergoes dehydration to yield carbon monoxide, carbon dioxide, and water. The chemical reaction is: HOOC-COOH conc. H ₂ SO ₄, CO + CO ₂ + H ₂ O Answer: CO + CO ₂ + H ₂ O