a) Calculate the standard reaction Gibbs energy of the oxidation of ammonia to nitric oxide according to the equation 4NH3g+5O2g4NOg+6H2O(g)

b) One enzyme-catalyzed reaction in a biochemical cycle has an equilibrium constant (K1) that is half the equilibrium constant (K2) of a second reaction. If the standard Gibbs energy of the first reaction is -2 kJ/mol, what is the standard Gibbs energy of the second reaction?