Question

Suppose that the following reaction was proposed for use in a battery:
O2(?)+N2(?)⇋2 NO(?)
a) Calculate E°cell for the battery at 200°C, given that ΔfH°(NO(g)) = 90.25 kJ, S°(N2(g)) = 191.5 J/K, S°(NO(g)) = 210.7 J/K, and S°(O2(g)) = 205.0 J/K. [−0.4372 V]
b) Calculate Ecell at 200°C if the pressure of the O2, N2, and NO gases are 1.00, 1.00, and 2.00 bar respectively. [−0.4513 V]

The final correct answers are shown in the brackets. Please show all your work, thank you!

Answer 1