pH scale is used to determine how acidic, basic or neutral a solution is.
pH is calculated using the hydrogen ion concentration
pH = -log[H⁺]
if we know the pH we can calculate the H⁺ concentration
[H⁺] = antilog(-pH)
[H⁺] = 1.26 x 10⁻⁸ M
therefore [H⁺] is 1.26 x 10⁻⁸ M
