Can you please answer sub question A and B and show all of the steps to the solution please and thank you

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter16: Principles Of Chemical Reactivity: The Chemistry Of Acids And Bases
Section: Chapter Questions
Problem 14PS: The pH of a solution of Ba(OH)2 is 10.66 at 25 . What is the hydroxide ion concentration in the...
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Can you please answer sub question A and B and show all of the steps to the solution please and thank you 

The pH of a solution of HN3 (K, = 1.9 × 10 5) and NaN3 is
4.86. What is the molarity of NaN3 if the molarity of HN3
is 0.016 M?
B
1515 The pH of a solution of NH3 and NH,Br is 8.90. What is the
molarity of NH¼Br if the molarity of NH3 is 0.016 M?
Transcribed Image Text:The pH of a solution of HN3 (K, = 1.9 × 10 5) and NaN3 is 4.86. What is the molarity of NaN3 if the molarity of HN3 is 0.016 M? B 1515 The pH of a solution of NH3 and NH,Br is 8.90. What is the molarity of NH¼Br if the molarity of NH3 is 0.016 M?
Expert Solution
Step 1

In the above problem the solutions are buffer solutions

So we will use Henderson Hasselbalch equation to obtain concentration of. Salt.

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