pOH值计算器
根据氢氧根离子浓度计算溶液的pOH值。
M
pOH
2.00
pH12.00
pOH vs Hydroxide Ion Concentration [OH-]
公式
## How to Calculate pOH ### Formula **pOH = -log10([OH-])** And: **pH + pOH = 14** (at 25 C)
计算示例
[OH-] = 0.01 M.
- 01pOH = -log10(0.01)
- 02pOH = 2
- 03pH = 14 - 2 = 12
常见问题
What is pOH?
pOH is the negative log of the hydroxide ion concentration. Like pH, lower pOH means more basic.
Why does pH + pOH = 14?
At 25 C, the ion product of water Kw = [H+][OH-] = 10^-14, so -log(Kw) = 14 = pH + pOH.
Is pOH commonly used?
Less than pH, but useful for base calculations and understanding the relationship between acids and bases.
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