What do you mean by `K_(a)` value of a carboxylic acid?

Explanation

### Step-by-Step Solution:

1. **Definition of \( K_a \)**: The \( K_a \) value, known as the acid dissociation constant, is a quantitative measure of the strength of an acid in solution. It indicates how well an acid can donate protons (H⁺ ions) in an aqueous solution.

2. **Dissociation of Carboxylic Acid**: When a carboxylic acid (RCOOH) is dissolved in water, it partially dissociates into its ions. The dissociation can be represented as:
\[ \text{RCOOH} \rightleftharpoons \text{RCOO}^- + \text{H}^+ \]
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