問題詳情
5. One milliliter (1.00 mL) of acid taken from a lead storage battery is pipetted into a flask. Water and phenolphthalein indicator are added, and the solution is titrated with 0.50 M NaOH until a pink color appears; 12.0 mL are required. The number of grams of H2SO4 (formula weight = 98) present in one liter of the battery acid is (to within 5%):
(A)240
(B)290
(C)480
(D)580
參考答案
答案：B
難度：困難0.333333
統計：A(0),B(2),C(2),D(2),E(0)