Calculate the pH of a buffer solution containing 0.15 mole of ` CH_3COOH ` and 0.1 mole of `CH_3 COO Na ` per litre. The dissociation constant for acetic acid ` 1.8 xx 10 ^(-5)`

Explanation

To calculate the pH of a buffer solution containing acetic acid (CH₃COOH) and sodium acetate (CH₃COONa), we can use the Henderson-Hasselbalch equation. Here are the steps to solve the problem:

### Step 1: Identify the given values
- Concentration of acetic acid (CH₃COOH) = 0.15 moles/L
- Concentration of sodium acetate (CH₃COONa) = 0.1 moles/L
- Dissociation constant (Kₐ) for acetic acid = 1.8 × 10^(-5)

### Step 2: Calculate pKₐ
...