Calculate the pH of 0.10 M solution of `NH_4CI` . The dissociation constant `(K_b) "of" NH_3 "is" 1.8 xx 10^(-5)` .

Explanation

To calculate the pH of a 0.10 M solution of NH4Cl, we can follow these steps:

### Step 1: Identify the nature of the salt
NH4Cl is the salt of a weak base (NH3) and a strong acid (HCl). When dissolved in water, it will dissociate into NH4+ and Cl- ions. The NH4+ ion will undergo hydrolysis to produce H+ ions, which will affect the pH of the solution.

### Step 2: Write the hydrolysis reaction
The hydrolysis of NH4+ can be represented as:
\[ NH_4^+ + H_2O \rightleftharpoons NH_3 + H_3O^+ \]
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