Draw the structures of the following compounds:
(i) Ethanoic acid (ii) Bromopentane
(iii) Butanone (iv) Hexanal
Are structural isomers possible for bromopentane?

Explanation

To solve the question, we will draw the structures of the specified compounds and discuss the possibility of structural isomers for bromopentane.

### Step-by-Step Solution:

**(i) Ethanoic Acid:**
1. Ethanoic acid is a carboxylic acid with the molecular formula C₂H₄O₂.
2. The structure consists of a carboxyl group (-COOH) attached to a two-carbon chain.
3. The structure can be represented as:
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