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The magnitude of the change in oxidising power of the $MnO_{4}^{-}/Mn^{2+}$ couple is $x \times 10^{-4} V,$ if the $H^{+}$ concentration is decreased from 1 M to 10^-4 M at 25^oC. (Assume concentration of $MnO_{4}^{-}$ and $Mn^{2+}$ to be same on change in $H^{+}$ concentration). The value of x is _________(Rounded off to the nearest integer) [Given : $\frac{2.303\; RT}{F}=0.059$ ]
Option: 1 3776
Option: 2 -
Option: 3 -
Option: 4 -

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Answer : 3776

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