The d- and f-Block Elements · NEET Preparation Chemistry

Acidified potassium permanganate oxidizes oxalic acid to carbon dioxide. The stoichiometric coefficient of water in the balanced chemical equation is:

Practice question from The d- and f-Block Elements (NEET Preparation Chemistry), with the correct answer and a step-by-step solution.

hard · MCQ · Q-A42E57

Acidified potassium permanganate oxidizes oxalic acid to carbon dioxide. The stoichiometric coefficient of water in the balanced chemical equation is:

  1. A.5
  2. B.8Correct answer
  3. C.10
  4. D.3

Solution

The balanced redox reaction is: 2MnO4−+5C2O42−+16H+→2Mn2++10CO2+8H2O2MnO_4^- + 5C_2O_4^{2-} + 16H^+ \rightarrow 2Mn^{2+} + 10CO_2 + 8H_2O. The stoichiometric coefficient of H2OH_2O is 8.

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