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5. a) Calculate the pH of a buffer solution which is 0.1 mol/L with respect to HCN (K₁ = 4.9 x 10-¹0 mol/L) and 0.8 mol/L with respect to sodium cyanide. b) Calculate the pH after 0.05 moles of HCI are added to 1 L of this buffer. c) Calculate the pH after 0.05 moles of NaOH are added to 1 L of this buffer. d) Calculate the pH after 0.2 moles of NaOH are added to 1 L of this buffer.

5. a) Calculate the pH of a buffer solution which is 0.1 mol/L with respect to HCN (K₁ = 4.9 x 10-¹0 mol/L) and 0.8 mol/L with respect to sodium cyanide. b) Calculate the pH after 0.05 moles of HCI are added to 1 L of this buffer. c) Calculate the pH after 0.05 moles of NaOH are added to 1 L of this buffer. d) Calculate the pH after 0.2 moles of NaOH are added to 1 L of this buffer.

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 31QRT
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= 5. a) Calculate the pH of a buffer solution which is 0.1 mol/L with respect to HCN (Ka 4.9 x 10-¹0 mol/L) and 0.8 mol/L with respect to sodium cyanide. b) Calculate the pH after 0.05 moles of HCI are added to 1 L of this buffer. c) Calculate the pH after 0.05 moles of NaOH are added to 1 L of this buffer. d) Calculate the pH after 0.2 moles of NaOH are added to 1 L of this buffer.
Transcribed Image Text:= 5. a) Calculate the pH of a buffer solution which is 0.1 mol/L with respect to HCN (Ka 4.9 x 10-¹0 mol/L) and 0.8 mol/L with respect to sodium cyanide. b) Calculate the pH after 0.05 moles of HCI are added to 1 L of this buffer. c) Calculate the pH after 0.05 moles of NaOH are added to 1 L of this buffer. d) Calculate the pH after 0.2 moles of NaOH are added to 1 L of this buffer.
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