[H + ]. [OH - ] = Kw / [H + ]. [OH - ]. [H + ] > [OH - ]. [H + ] < [OH - ]. [H + ] = [OH - ]. Acidic Solution. Basic Solution. Neutral Solution. What are the concentrations of H + and OH - in a 0.0012 M NaOH solution? Answer: NaOH s completely dissociated:
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[OH-] = Kw / [H+]
What are the concentrations of H+ and OH- in a 0.0012 M NaOH solution?
NaOH s completely dissociated:
0.0012 M NaOH (ac) 0.0012 M Na+(ac) +
Substituting [OH]- in the Kw equation: Kw = 1x10-14 = [H+][OH-]
1x10-14 = [H+](0.0012)
[H+] = 1x10-14/0.0012 =
0.0012 M OH- (ac)
[H+] pH [OH-] pOH