The standard free energy change for a reaction can be calculated using the equation
where n is the number of electrons transferred f is faraday\'s constant, 96.5 kj·mol−1·v−1, and δ e ∘ \' is the change reduction potential
for each of the following reactions, determine the number of electrons transferred (n) and calculate standard free energy ( δ g ∘ ′ ).

a) half-reactions: fumarate2- + 2h+ < --> succinate2-
coqh2 < --> coq + 2h+
overall reaction: fumarate2- + coqh2 < --> succinate2- + coq ( δg∘ ′ ) = -0.009v
n=( δ g ∘ ′ ) = kj*mol-1

b) half-reactions: cytochrome c1(fe2+) < --> cytochrome c1 (fe3+)
cytochrome c (fe3+) < --> cytochrome c (fe2+)
overall reaction: cyt c1 (fe2+) + cyt c (fe3+) < --> cyt c1 (fe3+) + cyt c (fe2+)( δe∘ ′ ) = 0.02v
n= ( δ g ∘ ′ )' = kj*mol-1