Write the final product(s) in each of the following reactions :
(a) `CH_(3)-overset(underset(|)(CH_(3)))underset(overset(|)(CH_(3)))(C)-O-CH_(3) + HI to`
(b) `CH_(3)-CH_(2)-underset(overset(|)(OH))(CH)-CH_(3)overset(Cu//573K)(to)`
(c) `C_(6)H_(5)-OHoverset((i) CHCl_(3) + aq. NaOH)underset((ii) H_(.)^(+))(to)`

Explanation

Let's solve the given reactions step by step.

### (a) Reaction of `CH3-CH(CH3)-O-CH3` with HI

1. **Identify the reactants**: The reactant is `CH3-CH(CH3)-O-CH3` which is an ether.
2. **Identify the nucleophilic species**: In HI, the iodide ion (I⁻) acts as the nucleophile.
3. **Mechanism of reaction**: The iodide ion will perform a nucleophilic substitution reaction on the ether.
4. **Substitution process**: The I⁻ ion attacks the carbon attached to the oxygen (O-CH3), leading to the cleavage of the C-O bond.
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