Question

A solution with a pH of 11 has a [H] of:

11
1x 10-3
1x 10-11
1x 1011
1x 103

Answer 1

1 x 10⁻¹¹moldm⁻³

Step-by-step explanation:

Given parameters:

pH of the solution = 11

Unknown:

[H] = ?

Solution:

The hydrogen ion concentration is unknown.

From:

PH = - log[H⁺]

So;

11 = -log[H⁺]

[H⁺] = 1 x 10⁻¹¹moldm⁻³