Propose mechanism of the reaction taking place when
(a) (-)-2-Bromooctane reacts with sodium hydroxide to form (+)-octane-2-ol.
(b) 2-Bromopentane is heated with (alc.) KOH to form alkenes.

Explanation

### Step-by-Step Text Solution

#### (a) Mechanism of the reaction of (-)-2-Bromooctane with Sodium Hydroxide to form (+)-octane-2-ol:

1. **Identify the Reactants and Products**:
- The reactant is (-)-2-Bromooctane (C8H17Br) and the product is (+)-octane-2-ol (C8H18O).

2. **Determine the Type of Reaction**:
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