Question

Question #cdd5b

Answer 1

`3.55*10^-13` `Mol`/`dm^3` is the concentration of Hydrogen ions.

Explanation:

Since pH = - log `[H^+]`

You substitute the value of 12.45 into the above equation to get:

12.45 = - log `[H^+]`

Then take the (- log) over to the side of 12.45, which then becomes:

(antilog) 12.45 = `[H^+]`
`10^-12.45` = `[H^+]`
`3.55*10^-13` = `[H^+]`

Hope I helped :)