Experiment 1: Preparation and pH of Buffer SolutionsTest 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 SolutionAcetic Acid; 4.5%Sodium Acetate SolutionRecorded pHA5.0 mL5.0 mL4.3B5.0 mL1.0 mL4.2C10.0 mL1.0 mL3.4D1.0 mL10.0 mL5.0E1.0 mL5.0 mL4.5/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 solutionsShow all work with units The answers must have the correct units and the correct number of significant CaicuiatedpHBufferAcetic Acid;Sodium AcetateRecordedSolution Molarity*Molarity*pHABDE*Concentration in the buffer solutionKa (acetic acid) = 1.8 x 105

Molarity of sodium acetate(NaCH3COO) stock solution = 0.49 M Molarity of acetic acid(CH3COOH) stock…

Answered: Experiment 1: Preparation and pH of…

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

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 17.4CYU: Using an acetic acid/sodium acetate buffer solution, what ratio of conjugate base to acid will you...

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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

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