Step 1: Understand the pH scale.
The pH scale measures the acidity or basicity of a solution,
where:
- A pH of 7 indicates a neutral solution.
- A pH below 7 indicates an acidic solution.
- A pH above 7 indicates a basic (alkaline) solution.
Step 2: Analyze the pH of pure water.
Pure water is neutral, with a pH of exactly 7 at 25°C.
Step 3: Conclude.
Thus, the pH value of pure water is \(
7 \).