The standard redox potentials for the reactions Mn^{2+}+2e^{-}\toMn and Mn^{3+}+2e^{-}\toMn^{2+} are -1.18 V and 1.51 V respectively. What is the redox potential for the reaction Mn^{3+}+3e^{-}\toMn?

KEAM 2011 Physics and Chemistry Paper

Question : 76 of 120

Marks: +1, -0

The standard redox potentials for the reactions Mn2++2e−→Mn and Mn3++2e−→Mn2+ are -1.18 V and 1.51 V respectively. What is the redox potential for the reaction Mn3++3e−→Mn?

0.33 V
1.69 V
−0.28 V
−0.85 V
0.85 V

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