Answer
(a) 9.62
(b) 1.12
(c) 12.04
(d) 4.47
Work Step by Step
1. Calculate the pH Value
$pH = -log[H_3O^+]$
$pH = -log( 2.4 \times 10^{- 10})$
$pH = 9.62$
2. Calculate the pH Value
$pH = -log[H_3O^+]$
$pH = -log( 0.076)$
$pH = 1.12$
3. Calculate the pH Value
$pH = -log[H_3O^+]$
$pH = -log( 9.2 \times 10^{- 13})$
$pH = 12.04$
4. Calculate the pH Value
$pH = -log[H_3O^+]$
$pH = -log( 3.4 \times 10^{- 5})$
$pH = 4.47$
