Weak Base pH

$$\text{pH} = 0.5 \cdot (\text{p}K_a - \log_{10}C)$$

Concept: Provides a direct calculation for the pH of a weak acid solution using its dissociation constant and concentration.

Notation:

• $$\text{p}K_a$$ = Negative logarithm of acid dissociation constant ($$-\log_{10}K_a$$);
• $$C$$ = Molar concentration.