Question

When the pH of a solution is 12.83, what is [H+]?

Answer 1

There are `1.479 xx 10^-13` concentration of hydrogen ions `mol/L`.

Explanation:

Because pH is a logarthmic scale, we can use the formula: `[H^+] = 10^("-pH")`. Where...
=> `[H^+]` is the concentration of hydrogen ions in the solution.
=> `pH` is the pH of the solution.
=> Where `10` is the base of the power - it's a logarithm formula.

We can now just sub in the values and solve for [`H^+]`.

`[H^+] = 10^("-pH")`

`= 10^(-(12.83))`

`= 1.479108388 xx 10^-13`

We can round (if required) to `1.479 xx 10^-13`.

Thus, there are `1.479 xx 10^-13` concentration of hydrogen ions `(mol)/L`.

Hope this helps :)