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1. Which of the following solutions will be the best buffer at a pH of 9.26? (Ka for HC2H302 is 1.8 x 10-5, Kb 10-5). a) 0.10 M HC2H3O2 and 0.10 M Na C₂H302 c) 0.10 M NH3 and 0.10 M NH4Cl e) 5.0 M HC2H3O2 and 5.0 M NH3 9.26= for NH3 is 1.8 x for MCH302 is 1.8.x 10-5, Kb for NH b) 5.0 M HC2H3O2 and 5.0 M Na C₂H302 d) 5.0 M NH3 and 5.0 M NH4CI

1. Which of the following solutions will be the best buffer at a pH of 9.26? (Ka for HC2H302 is 1.8 x 10-5, Kb 10-5). a) 0.10 M HC2H3O2 and 0.10 M Na C₂H302 c) 0.10 M NH3 and 0.10 M NH4Cl e) 5.0 M HC2H3O2 and 5.0 M NH3 9.26= for NH3 is 1.8 x for MCH302 is 1.8.x 10-5, Kb for NH b) 5.0 M HC2H3O2 and 5.0 M Na C₂H302 d) 5.0 M NH3 and 5.0 M NH4CI

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 93QRT: When 40.00 mL of a weak monoprotic acid solution is titrated with 0.100-M NaOH, the equivalence...
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AP CHEMISTRY UNIT 8C: BUFFERS AND TITRATION CURVES Retake Unit 8C: Buffers and Titration Curves 1. Which of the following solutions will be the best buffer at a pH of 9.26? (Ka for HC2H302 is 1.8 x 10-5, Kb for NH3 is 1.8 x 10-5). -log (1.8x10-5) = 4².74 G a) 0.10 M HC2H3O2 and 0.10 M Na C2H302 c) 0.10 M NH3 and 0.10 M NH4Cl e) 5.0 M HC2H3O2 and 5.0 M NH3 TIRONE 2022 9.26= b) 5.0 M HC2H3O2 and 5.0 M Na C₂H302 d) 5.0 M NH3 and 5.0 M NH4Cl
Transcribed Image Text:AP CHEMISTRY UNIT 8C: BUFFERS AND TITRATION CURVES Retake Unit 8C: Buffers and Titration Curves 1. Which of the following solutions will be the best buffer at a pH of 9.26? (Ka for HC2H302 is 1.8 x 10-5, Kb for NH3 is 1.8 x 10-5). -log (1.8x10-5) = 4².74 G a) 0.10 M HC2H3O2 and 0.10 M Na C2H302 c) 0.10 M NH3 and 0.10 M NH4Cl e) 5.0 M HC2H3O2 and 5.0 M NH3 TIRONE 2022 9.26= b) 5.0 M HC2H3O2 and 5.0 M Na C₂H302 d) 5.0 M NH3 and 5.0 M NH4Cl
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