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 14QAP: A buffer solution is prepared by adding 5.50 g of ammonium chloride and 0.0188 mol of ammonia to...
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Question
1) A buffer solution is 0.337 M in H2CO3 and 0.239 M in KHCO3 . If Ka1 for H2CO3 is 4.2x10^-7 , what is the pH of this buffer solution?
pH =
2)
An aqueous solution contains 0.302 M hypochlorous acid.
How many mL of 0.231 M potassium hydroxide would have to be added to 150 mL of this solution in order to prepare a buffer with a pH of 7.540?
3)
36.5 mL sample of a 0.310 M aqueous hypochlorous acid solution is titrated with a 0.441 M aqueous barium hydroxide solution. What is the pH after 8.80 mL of base have been added? Ka for HClO is 3.5x10^-8 .
pH =
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