Question

An unknown substance has hydrogen ion concentration of [H+]=3.1*10^-8M. Find the pH and classify the substance as acidic or basic

Answer 1

pH = 7.51. The substance is basic.

[H⁺] = 3.1 × 10⁻⁸ mol·L⁻¹.

pH = -log[H⁺] = -log(3.1 × 10⁻⁸) = 7.51

The substance is basic because pH > 7.