分压的求解: nerT B B nB =xB 机邵学电國图 pB B nP=XBP xB—B的摩尔分数分压的求解： x B ⎯ B的摩尔分数 V n RT p B B = B B B x n n p p = = V nRT p = p x p n n p B B B = =