Find the total no of acid and esters from `C_(4) H_(8 ) O_(2) `(only structural )

Explanation

To find the total number of structural isomers of acids and esters from the molecular formula \( C_4H_8O_2 \), we can follow these steps:

### Step 1: Identify the functional groups
The given molecular formula \( C_4H_8O_2 \) can represent both carboxylic acids and esters. The general structure for a carboxylic acid is \( RCOOH \) and for an ester is \( RCOOR' \).

### Step 2: Determine the possible carboxylic acids
For carboxylic acids, we can have the following structures:
1. **Butanoic acid**: \( CH_3(CH_2)_2COOH \)
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