The following two reactions are part of the citric acid cycle $($aka$,$ TCA or Krebs

Cycle$)$:

Reaction I: Acetyl$-$CoA $+$ Oxaloacetate harr Citrate $+H_{2}O$

Reaction II: L$-$malate $+$ NAD $=$harr Oxaloacetate $+$ NAD

a$)$ Given the equilibrium constants of $K_i=6\mathrm{.}97{10}^2$ and $K_{il}=8\mathrm{.}87{10}^6,$

calculate the standard transformed Gibbs free energy of reaction for each

of the reactions.

b$)$ For Reaction II$,$ the mitochondrial inner matrix has the following

concentrations of components under steady state conditions: $[$NAD$*]=$

L$-$Malate