Question

What is the [H+] of a solution with a pH of 3? Use a scientific calculator.

1 x 10-1
3 x 10-1
1 x 10-3
3 x 10-3

Answer 1

1 x 10⁻³.

Step-by-step explanation:

∵ pH = - log[H⁺]

3 = - log[H⁺].

log[H⁺] = -3.

∴ [H⁺] = 1 x 10⁻³.