concentration question

Question

Determine the pH and pOH of a solution at 25°C with a hydronium ion, H3O⁺(aq), concentration of

3.20x10^-10 mol/L. (please show me all the steps when solving this)

Answer 1

termine the pH and pOH of a solution at 25°C with a hydronium ion, H3O⁺(aq), concentration of

3.20x10^-10 mol/L.

By definition the H3O⁺ is - log [H3O⁺].

So, pH = - log(3.20x10^-10) = 9.49 (a scientific calculator can do this).

As pH + pOH = 14, the pOH can be obtained by solving for pOH,

pOH = 14 - 9.49 = 4.51.