Question

What are the hydronium and hydroxide ion concentrations in a solution that has a pH of 12.330?

Answer 1

`[H^+] = 4.68 xx 10^-13 M`
`[OH^-] = 0.0214 M`

Explanation:

The `[H^+]` can be found by raising `10` to the power of the negative of the `pH`:

`[H^+] = 10^(-12.330) = 4.68 xx 10^-13 M`

The `[OH^-]` can be found by dividing the value of the ion-product constant for water, `K_w`, by the `[H^+]`:

`[OH^-] = (1.00 xx 10^-14 M)/(4.68 xx 10^-13 M) = 0.0214 M`