pH of a strong acid
What is the pH of a 0.01 M HCl solution?
Answer B: explanation for every choice
A
A pH of 1 corresponds to 0.1 M H⁺.
B
Correct. HCl dissociates completely, so [H⁺] = 0.01 M = 10⁻² M and pH = 2.
C
A pH of 7 is neutral.
D
A pH of 12 corresponds to 0.01 M OH⁻, the pOH-to-pH confusion.
TakeawayFor strong acids, [H⁺] = the acid concentration and pH = −log[H⁺].
Equation usedpH and pOH
Next question →Reviewed 2026-11-05 by a medical student. Spot an error? Report it with question ID cp41.