Some Basic Concepts of Chemistry - Result Question 20
20. For the redox reaction
$ MnO _4^{-}+C _2 O _4^{2-}+H^{+} \longrightarrow Mn^{2+}+CO _2+H _2 O $
The correct coefficients of the reactants for the balanced reaction are
| $MnO _4^{-}$ | $C _2 O _4^{2-}$ | $H^{+}$ | |
|---|---|---|---|
| (a) | 2 | 5 | 16 |
| (b) | 16 | 5 | 2 |
| (c) | 5 | 16 | 2 |
| (d) | 2 | 16 | 5 |
(1992)
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Answer:
Correct Answer: 20. (a)
Solution:
The balanced redox reaction is :
$2 \mathrm{MnO}_4^{-}+5 \mathrm{C}_2 \mathrm{O}_4^{2-}+16 \mathrm{H}^{+} \longrightarrow 2 \mathrm{Mn}^{2+}+10 \mathrm{CO}_2+16 \mathrm{H}_2 \mathrm{O}$
Hence, the coefficients of reactants in balanced reaction are 2,5 and 16 respectively.
BETA
