Is pH a measure of the hydrogen ion concentration?

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Answer 1 · 2014-08-20T21:16:24

Yes, pH is a measure of the hydrogen ion concentration.

If you know the pH, you can calculate the hydrogen ion concentration.

EXAMPLE

Calculate the hydrogen ion concentration for a solution with pH 2.30.

Solution

Since pH = -log[H⁺],

[H⁺] = #10^(-"pH")# mol/L.

So [H⁺] = #10^-2.30# mol/L = 5.0 × 10⁻³ mol/L

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