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March 28, 2017

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Boric acid is a weak acid with an equilibruim constant(K)of 10-9.3. What is the pH balance of a 0.1 molar solution of boric acid?

  • Chemistry - ,

    ..........H3BO3 ==> H^+ + H2BO3
    I..........0.1M......0.......0
    C...........-x........x.......x
    E.........0.1-x........x......x

    Ka = (H^+)H2BO3^-)/(H3BO3)
    Subsitute from the ICE chart and solve for x = (H^+) and convert to pH.

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