Chapter 16.5, Problem 1CP

The $K_{\text{a}}$ of a weak acid is $5.5 \times {10}^{-4}$. What is the pH of a 0.63-M solution of this acid at $\text{25°C}$ ?

a)

3.26

b)

$1.83 \times {10}^{-2}$

c)

1.73

d)

1.63

e)

0.201