Q14. Consider this reaction: Mn3++eMn2+ Combining this half-reaction with the SHE yields: Mn3++1/2H2Mn2++H+ G0 for this reaction is 143.3kJmol1. Assume that both species are present in groundwater, which has a Eh value of 0.00V. What would happen when groundwater is pumped to the surface if Eh of surface water is 0.80V ? Assume temperatures of 25C. [Hint: calculate E0 for the reaction and use Nernst equation to calculate Q at both Eh values and compare]