A solution of methylamine, CH3NH2, behaves as a weak base. The equilibrium can be written as: CH3NH₂ + H+ = [CH3NH3]+ Methylamine has Kb = = 4.6 x 10-4. a) Calculate the pH of a methylamine solution with a concentration of 0.25 mol dm-³. 60.0 mL of this solution was mixed with 30.0 mL of a 0.10 mol dm-³ hydrochloric acid solution. b) Using an ICE table or another appropriate method, determine the pH of the resulting buffer solution. You should show all steps in your answer.
A solution of methylamine, CH3NH2, behaves as a weak base. The equilibrium can be written as: CH3NH₂ + H+ = [CH3NH3]+ Methylamine has Kb = = 4.6 x 10-4. a) Calculate the pH of a methylamine solution with a concentration of 0.25 mol dm-³. 60.0 mL of this solution was mixed with 30.0 mL of a 0.10 mol dm-³ hydrochloric acid solution. b) Using an ICE table or another appropriate method, determine the pH of the resulting buffer solution. You should show all steps in your answer.
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter14: Acids And Bases
Section: Chapter Questions
Problem 32QRT
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A solution of methylamine, CH3NH₂, behaves as a weak base. The equilibrium can be written as:
CH3NH₂ + H+ = [CH3NH3]+
Methylamine has K₁ = 4.6 x 10-4.
a) Calculate the pH of a methylamine solution with a concentration of 0.25 mol dm-³.
60.0 mL of this solution was mixed with 30.0 mL of a 0.10 mol dm-3 hydrochloric acid solution.
b) Using an ICE table or another appropriate method, determine the pH of the resulting buffer
solution. You should show all steps in your answer.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8e2a1df8-a0ed-4597-a1d2-983ee883ee4c%2F41a7a350-eba2-4115-8d3c-117e9d3dd202%2Fa4s5e5t_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Question 4
A solution of methylamine, CH3NH₂, behaves as a weak base. The equilibrium can be written as:
CH3NH₂ + H+ = [CH3NH3]+
Methylamine has K₁ = 4.6 x 10-4.
a) Calculate the pH of a methylamine solution with a concentration of 0.25 mol dm-³.
60.0 mL of this solution was mixed with 30.0 mL of a 0.10 mol dm-3 hydrochloric acid solution.
b) Using an ICE table or another appropriate method, determine the pH of the resulting buffer
solution. You should show all steps in your answer.
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