What happens when `CH_(3)-Br` is treated with KCN?

Explanation

To understand what happens when CH₃Br is treated with KCN, we can break down the reaction into several steps:

### Step 1: Identify the Reactants
The reactants in this reaction are:
- CH₃Br (methyl bromide)
- KCN (potassium cyanide)

### Step 2: Understand the Nature of KCN
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