Question

which value is most likely to be the ph of a salt solution that is formed by the reaction of a weak acid and a strong base?
2.0
6.8
7.0
8.7

Explanation:

Step1: Recall salt - hydrolysis concept

When a weak acid (HA) reacts with a strong base (BOH), the salt (BA) formed will hydrolyze in water. The anion (A⁻) of the weak - acid part will react with water: A⁻+H₂O⇌HA + OH⁻, producing hydroxide ions (OH⁻) in the solution.

Step2: Determine solution nature

Since hydroxide ions are produced, the solution will be basic. A basic solution has a pH > 7.

Answer:

D. 8.7