How will you convert the following:
(i) Isopropyl chloride to n-propyl chloride (ii) Methyl bromide to ethylamine
(iii) Chlorobenzene to benzoic acid (iv) Methyl bromide to acetic acid
(v) Propane to allyl chloride (vi) 1-Bromopropane to 2-bromopropane
(vii) Propene to propyne (viii) Ethanol to but-1-yne

Explanation

To convert the compounds as specified in the question, we will follow a systematic approach for each conversion. Here is the step-by-step text solution for each part of the question:

### (i) Isopropyl chloride to n-propyl chloride
1. **Starting Material**: Isopropyl chloride (CH3CHClCH3).
2. **Reagent**: Use alcoholic KOH.
3. **Reaction Type**: E2 elimination.
4. **Process**: The alcoholic KOH will abstract a hydrogen atom from the isopropyl chloride, leading to the formation of propene (CH3CH=CH2) after the elimination of HCl.
5. **Next Step**: React propene with HCl in the presence of water.
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