What is the ph of a 0.15 m solution of ammonium chloride?

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17-05-2017
Chemistry

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What is the ph of a 0.15 m solution of ammonium chloride?

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17-05-2017

Best Answer: (a)
8.9 x 10^-7 = x^2 / 0.15-x
x = [OH-] = 0.00037 M
pOH = 3.4
pH = 14 - 3.4 = 10.6

(b)
Ka = Kw/Kb = 5.6 x 10^-10 = x^2 / 0.20-x
x = [H+] = 0.000011 M
pH = 5.0

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