You have a solution for which the hydronium ion concentration is 4.5 x 10–4 M.?

👨🏻‍🏫 學術台化學

[匿名]

2016-02-24 5:53 am

What is the concentration the hydroxide ion, OH– in this solution at 25°C?

4.5 x 10-10
4.5 x 10-4
3.35
2.22
2.22 x 10-11
–10.65

回答 (1)

andrew

2016-02-24 6:06 am

[H₃O⁺] = 4.5 × 10⁻⁴ M

Kw = [H₃O⁺][OH⁻] = 1.0 × 10⁻¹⁴
[OH⁻] = (1.0 × 10⁻¹⁴) / (4.5 × 10⁻⁴) = 2.22 × 10⁻¹¹ M

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