Question

For the redox reaction
MnO⁻₄ + C₂O²⁻₄ – H⁺ ⟶ Mn²⁺ + CO₂ + H₂O the correct coefficients of the
reactants for the balanced reaction are:
MnO⁻₄ C₂O²⁻₄ H⁺
(a) 2 5 16
(b) 16 5 2
(c) 5 16 2
(d) 2 16 5

Answer 1

(a) 2 5 16

Explanation:

MnO4- is reduced to Mn2+

C204^2- is oxidized to CO2.

So the balanced equation will be:

2MnO4- + 5C2O4^2- + 16H+ ----> 2Mn2+ + 10CO2 + 8H20

So 2, 5 and 16 are coefficients of MnO⁻₄, C₂O²⁻₄ and H⁺ respectively.

Option A is the answer.