The pH of a solution obtained by dissolving 0.1 mole of an acid HA is 100 ml of the aqueous solution was found to be 3.0 . Calculate the dissociation constant of the acid.

Explanation

To calculate the dissociation constant (Ka) of the acid HA, we can follow these steps:

### Step 1: Determine the concentration of H⁺ ions
Given the pH of the solution is 3.0, we can find the concentration of hydrogen ions [H⁺] using the formula:
\[ \text{pH} = -\log[H^+] \]
From this, we can find:
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