問題詳情
72.A 0.307-g sample of an unknown triprotic acid is titrated to the third equivalence point using 35.2 mL of 0.106 M NaOH. Calculate the molar mass of the acid.
(A) 247 g/mol
(B)171g/mol
(C)165g/mol
(D)151 g/mol
(E)82.7g/mol
參考答案
答案：A
難度：非常困難0
統計：A(0),B(0),C(0),D(1),E(1)