The standard reaction Gibbs energy for the electrochemical reaction,
Cr2O2−7+2Fe+14H+→2Cr3++2Fe3++2H2O, is −793 kJ mol−1. The standard cell potential is Volts.
ΔG∘=−nFE∘cell
Here n=6,
−793×103=−6×96500×E∘cell
E∘cell=+1.3696
≈1.37V
The standard reaction gibbs energy for the electrochemical reaction.
Cr2O2−7+2Fe+14H+→2Cr3++2Fe3++2H2O is −793 kJ mol−1. The standard cell potential is:
The standard electrode potential for an electrochemical cell is 2.2 V. Calculate the standard Gibbs energy change for reaction: X(s)+Y2+(aq)→X2+(aq)+Y(s) (Given, 1F=96500 C mol−1) (correct answer +1, wrong answer -0.25)