Which of the following chemicals would be the best buffer for a pH 9.00 solution: NH3 (Kb = 1.75x10-5), C6H5NH2 (Kb = 3.99x10-10), H2NNH2 (Kb = 3.00x10-6), C5H5N (Kb = 1.69x10-9)?Group of answer choicesC5H5NH2NNH2C6H5NH2NH3

Buffer solutions are used to maintain a constant pH of the solutions. The pH is maintained by the…

Answered: b = 3.00x10-6), C5H5N (Kb = 1.69x10-9)?…

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 39QAP: Metacresol purple is an indicator that changes from yellow to purple at pH 8.2. (a) What is Ka for...

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Which of the following chemicals would be the best buffer for a pH 9.00 solution: NH₃ (K_b = 1.75x10^-5), C₆H₅NH₂ (K_b = 3.99x10^-10), H₂NNH₂ (K_b = 3.00x10^-6), C₅H₅N (K_b = 1.69x10^-9)?

Group of answer choices

C₅H₅N

H₂NNH₂

C₆H₅NH₂

NH₃

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