## Chemistry: The Molecular Science (5th Edition)

The $pOH$ value of this solution is 12.505.
- Hydronium concentration $(H_3O^+)$ = 0.032M; 1. Calculate the pH value. $pH = -log[H_3O^+]$ $pH = -log( 0.032)$ $pH = 1.495$ 2. Use the pH value to calculate the pOH. $pOH + pH = 14$ $pOH = 14 - pH = 14 - 1.495$ $pOH = 12.505$