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If the hydronium ion concentration of a aqueous solution at 25 degrees celcius is 5*10^-6 M, what is the hydroxide ion concentration

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  1. Note that the correct spelling is celsius.
    (H3O^+)(OH^-) = Kw = 1E-14.
    You know H3O^+ and Kw, calculate OH^-.

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    posted by DrBob222

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