Calculate the pH of 0.15 M H2SO4(aq) at 25 degrees C.
For this question, even though I have the answer, I don't know why the HSO4 AND the H3O are BOTH 0.15 for the second protonation, or how are we supposed to know there is going to be 2?
Problem
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Steve Chung 2E
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Re: Problem
There are two protonations because H2SO4 can give two protons (two H+) to water and creating H3O+. The reason why HSO4- and H3O+ are both 0.15M is because the first protonation reaction involves H2SO4, which is a strong acid that fully dissociates.
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