In muscle, the enzyme creatine kinase catalyses the following reaction:
Equation #1: Phosphocreatine + ADP ⇋ Creatine + ATP Keq = ?
The two half-reactions are:
Phosphocreatine + H2O -> Creatine + Pi ∆G0’ = -43.1 kJ/mol
ATP + H2O -> ADP + Pi ∆G0’ = -30.5 kJ/mol
Under standard conditions what is the equilibrium constant (Keq) for the phosphocreatine ⇋