AP EAMCET · Chemistry · Redox Reactions

For the redox reaction ${MnO}_{4}^{-} + C_{2} O_{4}^{2 -} + H^{+} \to {Mn}^{2 +} + {CO}_{2} + H_{2} O$ , the correct coefficients of the reactants for the balanced reaction are respectively ${MnO}_{4}^{-}, C_{2} O_{4}^{2 -}$ and $H^{+}$ :

A $2, 5, 16$
B $16, 3, 12$
C $15, 16, 12$
D $2, 16, 5$

Verified Solution

Answer & Solution

Correct Answer

(A) $2, 5, 16$

Step-by-step Solution

Detailed explanation

For balancing the reaction four steps should be followed in the given order 1. Balance elements i.e central metal which oxidised or reduced. 2. Balance oxygen by adding water molecules. 3. Balance hydrogen by adding H+ ion. 4. Balance charge by adding electrons. Balancing of…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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For the redox reaction MnO4-+C2O42-+H+→Mn2++CO2+H2O, the correct coefficients of the reactants for the balanced reaction are respectively MnO4-,C2O42- and H+:

Step-by-step Solution

For the redox reaction ${MnO}_{4}^{-} + C_{2} O_{4}^{2 -} + H^{+} \to {Mn}^{2 +} + {CO}_{2} + H_{2} O$ , the correct coefficients of the reactants for the balanced reaction are respectively ${MnO}_{4}^{-}, C_{2} O_{4}^{2 -}$ and $H^{+}$ :