Asked by emma

Which of the following statements is true of a solution at pH 7?

A. Kw and Kb are equal.
B. Kw and Ka are equal.
C. Kw, Ka and Kb are equal.
D. Ka and Kb are equal.
Answered by drRebel
Kw = Ka x Kb
For pH = 7 => Kw = 10^-14 @ 25-deg Celcius
Therefore, for Ka x Kb = 10^-14 => Ka = Kb = 10^-7
=> (10^-7)(10^-7)= 10^-14
Answered by Kattrina
D. Ka and Kb are equal
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