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Homework Help: In a solution of 0.10 M H2SO4, the ions present in order of decreasing order.

  1. Dec 9, 2009 #1
    1. The problem statement, all variables and given/known data
    The answer is [ H3O+ ] > [HSO4-]>[SO4-2]>[OH-], but I do not understand how they got it?

    2. Relevant equations

    3. The attempt at a solution
    First I tried to put H2SO4 into water and got HSO4-. Then I tried to make an ice table, but it didn't work out since Ka for H2SO4 = very large?

    H2SO4 + H2O <====> HSO4- + H3O+
  2. jcsd
  3. Dec 9, 2009 #2


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    It is a problem in logic. You don't need to do an exact calculation.
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