問題詳情
40.tA solution is prepared by mixing 2.0 M H3A and 2.0 M NaH2A in the equal volume (H3A: pXa1 = 2.10, pXa2 = 7.20, pXa3 = 12.30). Which one is the closest to the pH value of this mixture?
(A)t2.10
(B)t2.45
(C)t4.65
(D)t7.20
(E)t9.75
參考答案
答案：A
統計：A:5,B:0,C:2,D:0,E:0
難度：計算中