a. Which of the following mixtures is a buffer solution? (Circle all that apply.) (A) Solution A: 200.OmL 0.40M HCI & 200.0mL 0.40M KCI (B) Solution B: 200.0mL 0.35M HCN & 200.0mL 0.40M NaCN (C)Solution C: 500.0mL 0.40M CH;NH2 & 500.0mL 0.40M CH;NH3B (D)Solution D: 200.0mL 0.25M HCN & 75.0mL 0.25M KOH b. Calculate the pH of Solutions B and D listed above. The Ka of HCN is 4.9 x 1010.

a. Which of the following mixtures is a buffer solution? (Circle all that apply.) (A) Solution A: 200.OmL 0.40M HCI & 200.0mL 0.40M KCI (B) Solution B: 200.0mL 0.35M HCN & 200.0mL 0.40M NaCN (C)Solution C: 500.0mL 0.40M CH;NH2 & 500.0mL 0.40M CH;NH3B (D)Solution D: 200.0mL 0.25M HCN & 75.0mL 0.25M KOH b. Calculate the pH of Solutions B and D listed above. The Ka of HCN is 4.9 x 1010.

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter24: The Standardization Of A Basic Solution And The Determination Of The Molar Mass Of An Acid

Section: Chapter Questions

Problem 2ASA: In an acid-base titration, 21.16 mL of an NaOH solution are needed to neutralize 20.04 mL of a...

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