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ICSE Class 8 Chemistry Question 3 of 17

Carbon & Its Compounds — Question 1

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Question 18

State the function of conc. sulphuric acid in the laboratory preparation of carbon monoxide from oxalic acid.

Answer

Conc. sulphuric acid acts as a dehydrating agent & removes a molecule of water from oxalic acid to produce carbon monoxide and carbon dioxide. The reaction is given below:

HOOC-COOH →Conc. H2SO4\xrightarrow{\text{Conc. H}_2\text{SO}_4} H2O + CO + CO2