Write chemical equations for the following conversions :
`CH_(3)-CH_(2)-Cl` into `CH_(3)-CH_(2)-CH_(2)-NH_(2)`
`C_(6)H_(5)-CH_(2)-Cl` into `C_(6)H_(5)-CH_(2)-CH_(2)-NH_(2)`

Explanation

To convert `CH₃-CH₂-Cl` into `CH₃-CH₂-CH₂-NH₂`, we will follow these steps:

### Step 1: Nucleophilic Substitution with KCN
1. Start with `CH₃-CH₂-Cl` (ethyl chloride).
2. React it with potassium cyanide (KCN). The cyanide ion (CN⁻) will act as a nucleophile and will replace the chlorine atom (Cl) in a nucleophilic substitution reaction.

**Chemical Equation:**
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