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Hi, I need help with question 12.25 with figuring out the concentration of H3O+. I understand how to calculate everything else, but I don't understand why there would even be a concentration of H3O+ if we are just dealing with a Bronsted base. In the solution manual, it mentions Kw. How would you do this and will this be on the test?
Kw stands for the equilibrium constant for water and can be used to find the concentration of H+ ions if given the concentration of OH- ions and vice versa. The formula is Kw= [H+][OH-]= 1*10^-14 which is derived from pH+pOH=14. Once you find your concentration of OH- from Ba(OH)2, you can plug it into this formula to find your concentration of [H+].
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