解: P=12665625Pa =1.25atm Pco = 1.25 16% = .2atmCaCO3s) =CaO)+CO G”=170577-14419T JI = (Po,o等温方程为: G = G+RTIn] = G'+RTInJ当 J = (Pco, = 0.2atm 、AG =0 时,对应的温度为开始分解温度AG = G°+ RTIn] =170577-14419 + RTIn0.2 =0=108K=810C
当 J=(Po =1.25atm 、 G = 0 时,对应的温度为沸腾温度.AG = AG+ RTIn] =170577-4419T + RTIn1.25=0T=119K =925C