What is the pH,POH,(H+), and (OH-) of 1.00x10^-5 M HBr solution?
回答 (1)
2017-06-07 2:17 pm
HBr is a strong acid which completely dissociates in aqueous solution to form H⁺ ions.
[H⁺] = [HBr]ₒ = 1.00 × 10⁻⁵ M
[OH⁻] = Kw / [H⁺] = (1.00 × 10⁻¹⁴) / (1.00 × 10⁻⁵) M = 1.00 × 10⁻⁹ M
pH = -log[H⁺] = -log(1.00 × 10⁻⁵) = 5.0
pOH = -log[OH⁻] = -log(1.00 × 10⁻⁹) = 9.0
[H⁺] = [HBr]ₒ = 1.00 × 10⁻⁵ M
[OH⁻] = Kw / [H⁺] = (1.00 × 10⁻¹⁴) / (1.00 × 10⁻⁵) M = 1.00 × 10⁻⁹ M
pH = -log[H⁺] = -log(1.00 × 10⁻⁵) = 5.0
pOH = -log[OH⁻] = -log(1.00 × 10⁻⁹) = 9.0
收錄日期: 2021-05-01 13:08:52
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170607045334AANbvuE