# Problem: At 40.ºC the value of Kw is 2.92 x 10 -14.c. If the hydroxide ion concentration in a solution is 0.10 M, what is the pH at 40.ºC?

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###### Problem Details

At 40.ºC the value of Kw is 2.92 x 10 -14.

c. If the hydroxide ion concentration in a solution is 0.10 M, what is the pH at 40.ºC?