Nitric acid dissolves in water according to equation (6).

HNO₃ H⁺ + NO₃^-

At equilibrium, 20 C and (constant) 1 atm pressure, it is found that X_H = 4.6 x 10^-5 M, X_nitrate = 4.6 x 10^-5 M, and X_{nitric acid}= 0.02 M. Calculate the equilibrium constant (K) and g⁰