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 solve the problem step by step, we will follow these calculations:

### Step 1: Calculate the number of moles of the acid (HA)
To find the number of moles of the acid, we use the formula:

\[ \text{Moles of solute} = \frac{\text{Given mass}}{\text{Molecular mass}} \]
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