Answer
At 25 C, the hydrogen ion concentration is pure water is 1.0 x 10^-7. Knowing pH is the negative log of the hydrogen ion concentration. This gives us the pH to be 7.
Work Step by Step
At 25 C, the hydrogen ion concentration is pure water is 1.0 x 10^-7. Knowing pH is the negative log of the hydrogen ion concentration. This gives us the pH to be 7.