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chemistry

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I have this on my homework but cannot fine any examples in the book or my notes that relate to a problem set up this way, can you help?

What are the concentrations of OH– and H in a 0.00078 M solution of Ba(OH)2 at 25 °C? Assume complete dissociation.

  • chemistry - ,

    [Ba(OH)2] = 7.8E-4M
    ......Ba(OH)2 ==> Ba^2+ + 2OH^-
    I....7.8E-4.......0........0
    C....-7.8E-4...7.8E-4...2*7.8E-4
    E.....0........7.8E-4..1.56E-3

    So (OH^-) = 1.56E-3M and use
    (H^+)(OH^-) = Kw = 1E-14 to solve for (H^+).

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