Experiment 1: Preparation and pH of Buffer Solutions Test Data: Mass of Sodium Acetate :4.0 g Volume of Sodium Acetate Solution: 100.00mL Acetic Acid Concentration (mass percent from label) :4.5% pH of Prepared Buffer Solutions Buffer Solution Acetic Acid; 4.5% Sodium Acetate Solution Recorded pH A 5.0 mL 5.0 mL 4.3 B 5.0 mL 1.0 mL 4.2 C 10.0 mL 1.0 mL 3.4 D 1.0 mL 10.0 mL 5.0 E 1.0 mL 5.0 mL 4.5 /Results *Show all work with units. The answers must have the correct units and the correct number of significant figures Sodium acetate moles 0.049 mol (molar mass = 82.0 g/mol) Molarity of sodium acetate = 0.49 M Concentration of acetic acid (from bottle) =4.5 % Molarity of acetic acid = 0.75 M (molar mass = 60.0 g/mol; density of the solution is 1.0 g/mL) Work: pH (calculated and theoretical) of prepared buffer solutions Show all work with units The answers must have the correct units and the correct number of significant
Experiment 1: Preparation and pH of Buffer Solutions Test Data: Mass of Sodium Acetate :4.0 g Volume of Sodium Acetate Solution: 100.00mL Acetic Acid Concentration (mass percent from label) :4.5% pH of Prepared Buffer Solutions Buffer Solution Acetic Acid; 4.5% Sodium Acetate Solution Recorded pH A 5.0 mL 5.0 mL 4.3 B 5.0 mL 1.0 mL 4.2 C 10.0 mL 1.0 mL 3.4 D 1.0 mL 10.0 mL 5.0 E 1.0 mL 5.0 mL 4.5 /Results *Show all work with units. The answers must have the correct units and the correct number of significant figures Sodium acetate moles 0.049 mol (molar mass = 82.0 g/mol) Molarity of sodium acetate = 0.49 M Concentration of acetic acid (from bottle) =4.5 % Molarity of acetic acid = 0.75 M (molar mass = 60.0 g/mol; density of the solution is 1.0 g/mL) Work: pH (calculated and theoretical) of prepared buffer solutions Show all work with units The answers must have the correct units and the correct number of significant
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter17: Principles Of Chemical Reactivity: Other Aspects Of Aqueous Equilibria
Section17.2: Controlling Ph: Buffer Solutions
Problem 4CYU: Calculate the pH of 0.500 L of a buffer solution composed of 0.50 M formic acid (HCO2H) and 0.70 M...
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Question
Experiment 1: Preparation and pH of Buffer Solutions
Test Data:
- Mass of Sodium Acetate :4.0 g
- Volume of Sodium Acetate Solution: 100.00mL
- Acetic Acid Concentration (mass percent from label) :4.5%
- pH of Prepared Buffer Solutions
Buffer Solution |
Acetic Acid; 4.5% |
Sodium Acetate Solution |
Recorded pH |
A |
5.0 mL |
5.0 mL |
4.3 |
B |
5.0 mL |
1.0 mL |
4.2 |
C |
10.0 mL |
1.0 mL |
3.4 |
D |
1.0 mL |
10.0 mL |
5.0 |
E |
1.0 mL |
5.0 mL |
4.5 |
/Results
*Show all work with units. The answers must have the correct units and the correct number of significant figures
- Sodium acetate moles 0.049 mol
(molar mass = 82.0 g/mol)
- Molarity of sodium acetate = 0.49 M
- Concentration of acetic acid (from bottle) =4.5 %
- Molarity of acetic acid = 0.75 M
(molar mass = 60.0 g/mol; density of the solution is 1.0 g/mL)
Work:
- pH (calculated and theoretical) of prepared buffer solutions
Show all work with units The answers must have the correct units and the correct number of significant
![Caicuiated
pH
Buffer
Acetic Acid;
Sodium Acetate
Recorded
Solution Molarity*
Molarity*
pH
A
B
D
E
*Concentration in the buffer solution
Ka (acetic acid) = 1.8 x 105](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4fdf30f9-03bf-477f-9a7b-c846d8f14294%2Fb4c6de5a-902c-4987-ae9e-ff5db6ad8027%2F65ndz3_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Caicuiated
pH
Buffer
Acetic Acid;
Sodium Acetate
Recorded
Solution Molarity*
Molarity*
pH
A
B
D
E
*Concentration in the buffer solution
Ka (acetic acid) = 1.8 x 105
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