Write the IUPAC names of the following :
`(i) CH_3 CH= CHCOOH " "(ii ) CH_3CH_2 CH_2 COOH " " (iii ) C_6 H_5 CH_2 COOH " "(iv ) (CH_3 )_3 C COOH ` `(v ) CH_3 CH_2 COCH_2 COOH (vi ) (CH_3)_3 C CH_2 COOH "
"(vii ) CH_3 - underset(OH) underset(|)CH-CH_2 COOH `

Explanation

To write the IUPAC names for the given compounds, we will follow the systematic naming rules for organic compounds, focusing on identifying the longest carbon chain, the functional groups present, and their positions. Let's break down each compound step by step.

### Step-by-Step Solution

**(i) CH₃CH=CHCOOH**

1. Identify the longest carbon chain: The longest chain has 4 carbons.
2. Identify functional groups: There is a carboxylic acid (COOH) and a double bond (alkene).
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