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Kb for NH3 = 1.8 x 10–5 a) Calculate the pH of a buffer solution that...

Kb for NH3 = 1.8 x 10–5
a) Calculate the pH of a buffer solution that is 0.100 M NH3 and 0.120 M NH4NO3.
b) What is the pH after 60.0 mL of 0.010 M HCl is added to 90.0 mL of the buffer solution in 2(a). Assume the change in volume is additive.
c) What is the pH after 60.0 mL of 0.010 M Ca(OH)2 is added to 90.0 mL of the buffer solution in 2(a). Assume the change in volume is additive.

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