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if the pH of rain water is 5.6 on average what is the concentration of carbonic acid in rain water?

  • Acid/Base chemistry - ,

    If the pH of rain water is 5.6 on average what is the concentration of carbonic acid in rain water?

  • College Chem - ,

    ...........H2CO3 ==> H^+ + HCO3^-
    initial......x.......0.......0
    change..........2.51E-6..2.51E-6
    equil.......x-2.51E-6
    K = (H^+)(HCO3^-)/(H2CO3)
    Substitute and solve for x.
    Watch out. The H^+ from neutral water is 1E-7 and that's very close to this value. You may not be able to neglect that.

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