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Question

For the following half cell reactions, Eo values are also given:

Mn2++2H2OMnO2+4H++2e; Eo=1.23V
MnO4+4H++3eMnO2+2H2O; Eo=+1.70V
Select the correct statements.

A
Mn2+ reacts with MnO4 in acid solution to form MnO2
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B
Mn(MnO4)2 is stable in acid solution
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C
MnO2 disproportionates to Mn2+ and MnO4 in acid solution
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D
None of the above
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