Assuming complete dissociation , calculate the pH of the following solutions:
` 0.0009M nitric acid

Explanation

To calculate the pH of a 0.0009 M nitric acid (HNO3) solution, we will follow these steps:

### Step 1: Understand the dissociation of nitric acid
Nitric acid is a strong acid and dissociates completely in water:
\[ \text{HNO}_3 \rightarrow \text{H}^+ + \text{NO}_3^- \]

### Step 2: Determine the concentration of hydrogen ions
Since nitric acid completely dissociates, the concentration of hydrogen ions \([\text{H}^+]\) will be equal to the concentration of the nitric acid solution:
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