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chemistry

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A certain weak base has a Kb of 9.00 × 10-7. What concentration of this base will produce a pH of 10.34?

  • chemistry -

    pH + pOH = pKw = 14.
    You know pH and pKw, solve for pOH, then
    pOH = -log(OH^-) and solve for (OH^-).
    ..........BH + HOH ==> BH2^+ + OH^-
    Kb = (BH2^+)(OH^-)/(BH)
    You know (OH^-) = (BH2^+) and Kb, solve for (BH) = concn of base.

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