🤓 Based on our data, we think this question is relevant for Professor Duim's class at UCD.
We’re being asked to determine the pH of pure water at 0 ˚C, given a Kw of 1.2 × 10–15.
Recall that Kw is the autoionization constant of water, and is given by:
At 0 degrees C, the ion product constant of water is 1.2x10 –15. The pH of pure water at this temperature is: