What is the pH of an aqueous solution with a hydroxide ion concentration of 1.8 x 10–3 M?
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Answer:
[OH-] = 1.8 • 10^-3
pOH = -log [OH-]
= -log [ 1.8 • 10^-3]
= 3 - log 1.8
= 3 - 0.25
pOH = 2.75
pH = 14 - pOH
= 14 - 2.75
pH = 11.25
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