On the basis of H-bonding explain that the second ionization constant `K_(2)`for fumaric acid is greater than for maleic acid.

Explanation

To explain why the second ionization constant \( K_2 \) for fumaric acid is greater than that for maleic acid based on hydrogen bonding, we can follow these steps:

### Step 1: Understand the Structures of Fumaric and Maleic Acid
- **Maleic Acid**: It has a cis configuration with the two carboxylic acid groups (–COOH) on the same side of the double bond.
- **Fumaric Acid**: It has a trans configuration with the two carboxylic acid groups on opposite sides of the double bond.

### Step 2: Draw the Structures
- **Maleic Acid**:
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