Homework Help: Chem

Posted by Jess on Monday, November 14, 2011 at 2:28am.

The electrochemical cell described by the balanced chemical equation has a standard emf of -0.25 V. Calculate the value (kJ) for the ΔG˚ of the cell. Round your answer to 3 significant figures.

MnO2(s) + Pb2+(aq) → Mn2+(aq) + PbO2(s)

St. Red. Pot. (V)
PbO2/Pb2+ +1.46
MnO2/Mn2+ +1.21
Faraday's Constant
F = 96485 C

Chem - DrBob222, Monday, November 14, 2011 at 2:27pm
DG^o = -nE^oF
Substitute and solve for DG^o

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