Question

What is the hydrogen ion concentration of a solution with a pH = 8.25?

Answer 1

The concentration of H⁺ Ions can be calculated using following formula,

pH = -log [H⁺]
or,
-pH = log [H⁺]
Now, Solving for [H⁺],
[H⁺] = 10⁻⁽pH⁾
Putting value of pH,
[H⁺] = 10⁻⁽⁸·²⁵⁾

[H⁺] = 5.62 × 10⁻⁹ M

Answer 2

pH is simply a convenient way to denote hydrogen ion concentration (usually in moles per liter or molarity). pH is calculated from the given concentration using the equation:

pH = - log [H+].

To find [H3O+] from the given equation, we apply the antilog.

[H+] = 10^(-pH) or ten raised to the negative value of pH

a solution with a pH of 8.25 has a hydrogen ion concentration of 5.6234 x 10^ -9 moles per liter.