titrated with 0.100 M HCl. What is the most likely pH of the resulting solution after the addition of 100.0 mL of HCl to the NH3? Kb, NH3 = 1.8x10-5  a) the pH = 5.277 b) pH = 1.845  c) the pH would be exactly 1  d) the pH is = 7.545 I know the answer is B, but I

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Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.91QP: A 50.0-mL sample of a 0.100 M solution of NaCN is titrated by 0.200 M HCl. Kb for CN is 2.0 105....
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A 75.0 mL sample of 0.100 M NH3 is titrated with 0.100 M HCl. What is the most likely pH of the resulting solution after the addition of 100.0 mL of HCl to the NH3? Kb, NH3 = 1.8x10-5 

a) the pH = 5.277

b) pH = 1.845 

c) the pH would be exactly 1 

d) the pH is = 7.545

I know the answer is B, but I do not know how to get it. 

 

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