Question

The standard free energy change for a reaction can be calculated using the equation

Answer 1

Answer:

a) 1,737 kJ

b) -1,93 kJ

Explanation:

The standard free energy change (ΔG) can be determined using:

ΔG = -nFE

a) For the reaction:

Fumarate²⁻ + CoQH₂ ⇄ succinate²⁻ + CoQ

The transferred electrons are 2, As E=-0,009V:

ΔG = -2×96,5kJ/molV×-0,009V

ΔG = 1,737 kJ

b) For the reaction:

cytc1 (Fe²⁺) + cytc (Fe³⁺) ⇄ cytc1 (Fe³⁺) + cytc (Fe²⁺)

The transferred electron is n=1 and E=0,02V:

ΔG = -1×96,5kJ/molV×0,02V

ΔG = -1,93 kJ

I hope it helps!