Answer
$pH = 5.658$
$pOH = 8.342$
Work Step by Step
1. Calculate the pH value:
$pH = -log[H_3O^+]$
$pH = -log( 2.2 \times 10^{- 6})$
$pH = 5.658$
2. Find the pOH value:
$pOH + pH = 14$
$pOH = 14 - pH = 14 - 5.658$
$pOH = 8.342$