How do you calculate the pH of a strong acid?
Use pH = −log₁₀[H⁺]. A strong acid dissociates completely, so for a monoprotic acid such as HCl, [H⁺] equals the acid's concentration. For example, 0.010 mol dm⁻³ HCl has a pH of 2.00. To find [H⁺] from a pH value, raise 10 to the power of minus the pH. Give pH to 2 decimal places.
Formula
pH = −log₁₀[H⁺]
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