a) How many moles of ammonium bromide, NH,Br, would you need to add to a 100.0 mL solution of 0.250 M NH3 to obtain a solution with a pOH of 5.35. Note that the Kp of ammonia is 1.8 x 10-5. Assume that the addition of ammonium bromide does not affect the volume of the solution. NH: mol b) Determine the pH of the buffer described in part a) after 4.00 mL of 0.300 M HBr is added to the solution. pH: c) Determine the pH of the buffer described in part a) after 6.00 mL of 0.300 M NaOH is added to the solution. pH:

a) How many moles of ammonium bromide, NH,Br, would you need to add to a 100.0 mL solution of 0.250 M NH3 to obtain a solution with a pOH of 5.35. Note that the Kp of ammonia is 1.8 x 10-5. Assume that the addition of ammonium bromide does not affect the volume of the solution. NH: mol b) Determine the pH of the buffer described in part a) after 4.00 mL of 0.300 M HBr is added to the solution. pH: c) Determine the pH of the buffer described in part a) after 6.00 mL of 0.300 M NaOH is added to the solution. pH:

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter14: Equilibria In Acid-base Solutions

Section: Chapter Questions

Problem 26QAP: You want to make a buffer with a pH of 10.00 from NH4+/NH3. (a) What must the [ NH4+ ]/[ NH3 ]ratio...

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