Question

When KMnO₄ is heated with acidified oxalic acid, gas bubbles are evolved. These gas bubbles are evolved due to the formation of ______.

Options

• SO₂

• CO₂

• SO₃

• O₂

Answer 1

When KMnO₄ is heated with acidified oxalic acid, gas bubbles are evolved. These gas bubbles are evolved due to the formation of CO₂.

Explanation:

KMnO₄ reacts with oxalic acid according to the equation,

\[\ce{2MnO4- + 5C2O4^{2-} + 16H+ -> 2Mn^{2+} + 10CO2 + 8H2O}\]

Hence, bubbles evolved due to the formation of CO₂ gas.