Chemistry

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What must be the molarity of an aqueous solution of trimethylamine, (CH3)3 N, if it has a PH=11.20?

  • Chemistry -

    Convert pH to pOH (pH + pOH = pKw = 14), then convert pOH to (OH^-) by pOH = -log(OH^-), then,
    .....(CH3)3N + HOH ==> (CH3)3NH^+ + OH^-
    equil...x................OH..........OH
    where OH is the concn you found for OH^- above.
    Kb = [(CH3)3NH^+][OH^-]/[(CH3)3N]
    Substitute and solve for the denominator.

  • Chemistry -

    0.19M

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