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E(cell)^(@) for the reaction MnO(4)^(-)+...

`E_(cell)^(@)` for the reaction `MnO_(4)^(-)+5Fe^(+2)+8H^(+)rarrMn^(+2)+5Fe^(+)+4H_(2)O` is 0.59 V at 298 K Find the equilibriuym constant

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