A simple calculation can be used to determine the pH of a substance. Use the equation pH = -log[H⁺]. For example, when [H⁺] is 1 x 10⁻⁹, the pH is found by calculating pH = -log[1 x 10⁻⁹] = 9. Find the pH or [H⁺] for the following substances.
1) 1 x 10⁻⁹
2) 1 x 10⁻⁸
3) 1 x 10⁻²
4) 1 x 10⁻¹¹
5) 3.2 x 10⁻⁴
6) 1 x 10⁻¹⁴
7) 1 x 10⁻⁵
8) 1 x 10⁻⁶
9) 1 x 10⁻⁷
10) 1 x 10⁻¹
11) 1 x 10⁻⁹
12) 1 x 10⁻³
13) 1 x 10⁻⁴