13.5 g of an acid HA of molecular mass 135 was dissolved in 10 litres of aqueous solution Calculate the pH of the solution assuming the acid to be completely dissociated.

Explanation

To calculate the pH of the solution, we will follow these steps:

### Step 1: Calculate the number of moles of the acid (HA)
To find the number of moles, we can use the formula:
\[ \text{Moles} = \frac{\text{Mass}}{\text{Molecular Mass}} \]
Given:
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