What is the standard free energy change for this cell?

The cell reaction for a dry cell battery is Zn(s) + 2 MnO2(s) + 2NH4+(aq) ===%26gt; 2 NH3(aq) + Mn2O3(s) + Zn^2+(aq). The standard cell potential for this cell is 1.56 v. What is the standard free energy change for this cell?





A. +151 kJ


B. -151 kJ


C. -301 kJ


D. -602 kJ

What is the standard free energy change for this cell?
∆G = -nEF = -2*1.56*96485 = -301 (kJ)





C

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