Calculate the `pH` of `0.1 MNH_(3)` solution. `K_(b) = 1.8 ** 10^(-5)`

Explanation

To calculate the pH of a 0.1 M NH₃ (ammonia) solution, we will follow these steps:

### Step 1: Identify the given data
- Concentration of NH₃ (C) = 0.1 M
- Base dissociation constant (Kₐ) for NH₃ = 1.8 × 10⁻⁵

### Step 2: Write the equilibrium expression
NH₃ is a weak base and it will partially ionize in water according to the following reaction:
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