Write the IUPAC name of
`(I ) HOOC -COOH " " (ii ) COOH -CH_2 -COOH`

Explanation

To solve the problem of naming the given compounds using IUPAC nomenclature, let's break it down step by step.

### Step 1: Analyze the first compound `HOOC-COOH`
1. Identify the functional group: The compound has two carboxylic acid groups (–COOH).
2. Count the carbon atoms in the longest chain: There are 2 carbon atoms.
3. Determine the base name: The base name for a 2-carbon alkane is "ethane".
4. Identify the suffix for carboxylic acids: The suffix for carboxylic acids is "oic acid". Since there are two carboxylic acid groups, we use the prefix "di".
5. Combine the base name and suffix: The IUPAC name for the compound is "ethanedioic acid".
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