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405318478 wrote:In lecture Lavelle said that Kw is a constant, 1.0 x 10^-14. I'm looking at a homework problem, and it gives kw as 2.1 x 10^-14, could someone clarify the meaning of the value of Kw? The homework question im referring to is 6A.21
In that problem, the Kw is different because it was found at a different temperature. The value from Kw in class is at 25C. A change in temperature will result in a change of K.
Nathan Rothschild_2D wrote:Kw is the equilibrium constant for water and at 25 C is 10^(-14), but if the equation doesn't specify the temperature, can we assume that the reaction is taking place at 25 C?
I believe so, if it was at a different temperature, that temperature would have to be specified.
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