! A system at constant T.P has its Gibbs free energy depending only on the amounts of its 2 components. (N, ) The following model fits well for the Gibbs free energy. G RT 2 3N - 2N + a N N N + N A) a) If N is fixed and you are only allowed to remove or add N, identify an expression in terms of a, N, and RT for the existence of a stable equilibrium. B) 5 Do the same for the case when N is fixed and you are allowed to change N