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20. Classify each of the following mixtures of aqueous solutions as buffers, according to their resulting pH. Choices are: Write your answer on the line. a) 250 mL of 0.30 M HCl + 100 mL of 0.75 M KNO2 b) 150 mL of 0.60 M NHBr + 100 mL of 0.90 M NH3 c) 200 mL of 0.10 M HC2H3O2 + 120 mL of 0.10 M KOH d) 25 mL of 0.60 M HClO4 + 45 mL of 0.60 M KF e) 300 mL of 0.25 M HCN + 280 mL of 0.30 M LiOH Buffer or Not a buffer

20. Classify each of the following mixtures of aqueous solutions as buffers, according to their resulting pH. Choices are: Write your answer on the line. a) 250 mL of 0.30 M HCl + 100 mL of 0.75 M KNO2 b) 150 mL of 0.60 M NHBr + 100 mL of 0.90 M NH3 c) 200 mL of 0.10 M HC2H3O2 + 120 mL of 0.10 M KOH d) 25 mL of 0.60 M HClO4 + 45 mL of 0.60 M KF e) 300 mL of 0.25 M HCN + 280 mL of 0.30 M LiOH Buffer or Not a buffer

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.141QP: Ka for formic acid is 1.7 104 at 25C. A buffer is made by mixing 529 mL of 0.465 M formic acid,...
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20. Classify each of the following mixtures of aqueous solutions as buffers, according to their resulting pH. Choices are: Write your answer on the line. a) 250 mL of 0.30 M HCl + 100 mL of 0.75 M KNO2 b) 150 mL of 0.60 M NHBr + 100 mL of 0.90 M NH3 c) 200 mL of 0.10 M HC2H3O2 + 120 mL of 0.10 M KOH d) 25 mL of 0.60 M HClO4 + 45 mL of 0.60 M KF e) 300 mL of 0.25 M HCN + 280 mL of 0.30 M LiOH Buffer or Not a buffer
Transcribed Image Text:20. Classify each of the following mixtures of aqueous solutions as buffers, according to their resulting pH. Choices are: Write your answer on the line. a) 250 mL of 0.30 M HCl + 100 mL of 0.75 M KNO2 b) 150 mL of 0.60 M NHBr + 100 mL of 0.90 M NH3 c) 200 mL of 0.10 M HC2H3O2 + 120 mL of 0.10 M KOH d) 25 mL of 0.60 M HClO4 + 45 mL of 0.60 M KF e) 300 mL of 0.25 M HCN + 280 mL of 0.30 M LiOH Buffer or Not a buffer
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