Answer
(a) 7.77
(b) 7.00
(c) 5.66
(d) 3.13
Work Step by Step
1. Calculate the pH Value
$pH = -log[H_3O^+]$
$pH = -log( 1.7 \times 10^{- 8})$
$pH = 7.77$
2. Calculate the pH Value
$pH = -log[H_3O^+]$
$pH = -log( 1 \times 10^{- 7})$
$pH = 7.00$
3. Calculate the pH Value
$pH = -log[H_3O^+]$
$pH = -log( 2.2 \times 10^{- 6})$
$pH = 5.66$
4. Calculate the pH Value
$pH = -log[H_3O^+]$
$pH = -log( 7.4 \times 10^{- 4})$
$pH = 3.13$
