What is the Gibbs free energy change,△G,across a membrane with a pH difference of 0.50 and a membrane potential of -0.10 V at 310 K? (R = 8.315 J K-1 mol-1;F = 96,485 J V-1 mol-1)
A)-6.85 kJ mol-1
B)-12.6 kJ mol-1
C)38.6 kJ mol-1
D)57.9 kJ mol-1

Question

Quizplus · Accepted Answer

The Gibbs free energy change can be calculated using the equation: ΔG = -nFΔψ + 2.303RTΔpH. Substituting the given values (n = 1, F = 96,485 J V-1 mol-1, Δψ = -0.10 V, R = 8.315 J K-1 mol-1, T = 310 K, ΔpH = 0.50), we find ΔG = -12.6 kJ mol-1.

What Is the Gibbs Free Energy Change,△G,across a Membrane with a PH