can someone solve this ? please? the answer is b
i just don't know how to solve it
Determine the pH of the following solution. Initial concentrations are given: [HC2H3O2] = 0.250 M, [HCl] = 0.120 M. (Ka = 1.8 x 10-5)
a. 0.60 b. 0.92 c. 0.43 d. 4.74 e. 13.08
Determine the pH of the following solution?
2016-02-26 11:14 am
回答 (2)
2016-02-26 1:16 pm
HA: pH = 0.5(pKa - lg(0.25)) = 2.67
so
H^+ = 10^-2.67 = 2.14 mM
where
H^+(tot) = (0.12 M + 2.14 mM) = 0.122 M
so
pH = 0.92
so
H^+ = 10^-2.67 = 2.14 mM
where
H^+(tot) = (0.12 M + 2.14 mM) = 0.122 M
so
pH = 0.92
收錄日期: 2021-04-18 14:31:58
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160226031439AA8Gebx