Fluorine is more electronegative than chlorine but p-fluorobenzoic acid is a weaker acid than p-chlorobenzoic acid. Explain.

Explanation

To understand why p-fluorobenzoic acid is a weaker acid than p-chlorobenzoic acid despite fluorine being more electronegative than chlorine, we need to analyze the effects of these substituents on the acidity of the compounds.

### Step-by-Step Solution:

1. **Understanding Acidity in Carboxylic Acids**:
The acidity of carboxylic acids is influenced by the stability of the carboxylate ion (RCOO⁻) that forms after deprotonation. The more stable the carboxylate ion, the stronger the acid.

2. **Electronegativity of Halogens**:
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