Value of Kw

[Samuel G Rivera - Discussion 4I]

For problems that don't say what Kw is, do we just assume that it is 1.0*10^-14 and that the pH scale is 1 to 14? Or is there some way to calculate Kw when just given, for example, [H30+]?

[romina_4C]

At 25 degrees celsius, the value of Kw is always 1.0 x 10^-14. You can usually always assume that. If the temperature is different, the problem will usually give you the value of Kw at that temperature.

[Kylie Lim 4G]

Kw is always 1.0x10^-14 at 25 degrees celsius

[Bella Townsend]

Kw= Ka x Kb
Ka and Kb have to be a conjugate acid and base pair

[Kallista McCarty 1C]

Kw is always equal to 1.0 x 10^-14 at 25 degrees celsius!

[KnarGeghamyan1B]

Since we haven't gone over any problems where we need to know Kw at a temperature other than 25 degrees Celsius, I don't think there will be any on the test. However, if both Kb and Ka are given you can find it.

[Leyna Dang 2H]

Yes, at 25 degrees celcius, Kw will always be equal to 1.0 x 10^-14