Now recall that at 25 degrees Celsius, kw = 1.0 × 10-14. This is a value you'll have to remember on your own. You're not going to be expected to memorize, or to be given a formula sheet with this value present. But remember kw is an equilibrium constant and like the other equilibrium constants, it is temperature dependent. If I play around with my temperature where it strays away from 25 degrees Celsius, then the value itself will change. We're going to say the general trend is as the temperature increases, our kw increases.
If we take a look here, we have temperatures ranging from 0 degrees Celsius all the way up to 100 degrees Celsius. And if you look, you can see that as our temperature starts to increase, going from 0 to 100, we can see that the general trend is that my kw value is increasing. Again, at 25 degrees Celsius, kw is equal to this value. This is what you're expected to remember on your own. If the temperature changes from 25 degrees Celsius, you'll be given that new value for kw because it could really be any number, so it's hard for you to memorize an entire list of kw at all these different temperatures. Okay. And remember, the general trend is as the temperature increases, our kw generally increases as well.