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chem class

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What is the concentration (in M) of hydroxide ions in a solution at 25°C with pH = 4.282?

  • chem class -

    I would do it this way.
    pH + pOH = pKw = 14
    Solve for pOH.
    Then pOH = -log(OH^-) and solve for OH^-

    You could convert pH to H^+, then
    (H^+)(OH^-) = 1 x 10^-14
    and solve for OH^-

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