2)△ mix H-0 Hg =HB.m +0 aT P,nBnc P,nB,nc Hm.B T2 HB =HB.m △mizH=0 1616 2）ΔmixH=0 0 ( ) ( ) , , * , , +               =               B C B C P n n B P n n B T T T T   2 , 2 T H T HB m B − = − HB = HB,m ΔmixH=0 HB = HB,m