Question

Calculate the hydroxide ion concentration for an aqueous solution that has a ph of 3.45

Answer 1

Explanation:

pH equals negative log of concentration of hydrogen ions.

Mathematically,       pH = -log $[H^{+}]$

Also,    pH + pOH = 14

               pOH = 14 - 3.45

                        = 10.55

Therefore,   $[OH^{-}]$ = antilog 10.55

                                                 = $3.548 \times 10^{10}$

Thus, we can conclude that concentration of hydroxide ion for an aqueous solution that has a pH of 3.45 is $3.548 \times 10^{10}$.