Complete solution-Buffer Preparation- Materials/Chemicals:Volumetric flasksBeakersAcid-base indicators:Serologic pipettersAspiratorsVials/test tubesCone. H3PO4 (85% w/w, sp gr. 1.70, MM 98)Cone. HCL (37.3% w/w sp. Gr. 1.18, MM 36)Glacial acetic acid (99.7% ww, sp gr. 1.05, MM60)NaOH pelletsNaH2PO4Bromophenol BlueBromocresol greenPhenol redMethyl redMethyl orangePhenolphthaleinThymol BlueрH pаperpH meterWeighing balanceNa2HPO4Methodolody: (Include a short summary of the overall experimental plan you are going to run. Youmay use flow chart or bullet form for this part. Sketches of any experimental set-ups used in theexperiment or the workup procedures).Preparation of buffers1. Prepare 250ml of the following buffer solutions.ConcentrationBuffer solutionpkaDesired ph0.50 MAcetate4.705.0Identify the weak acid and conjugate base of the components of each buffer. Compute the buffercomponents using the Henderson-Hasselbalch equation.

Interpretation: To prepare 0.5 M, 250 mL of acetate buffer with a desired pH of 5.0.

Preparation of buffers 1. Prepare 250ml of the following buffer solutions. Concentration Buffer solution pka Desired ph 0.50 M Acetate 4.70 5.0 Identify the weak acid and conjugate base of the components of each buffer. Compute the buffer components using the Henderson-Hasselbalch equation.

Preparation of buffers 1. Prepare 250ml of the following buffer solutions. Concentration Buffer solution pka Desired ph 0.50 M Acetate 4.70 5.0 Identify the weak acid and conjugate base of the components of each buffer. Compute the buffer components using the Henderson-Hasselbalch equation.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Complete solution

-Buffer Preparation-

Materials/Chemicals:
Volumetric flasks
Beakers
Acid-base indicators:
Serologic pipetters
Aspirators
Vials/test tubes
Cone. H3PO4 (85% w/w, sp gr. 1.70, MM 98)
Cone. HCL (37.3% w/w sp. Gr. 1.18, MM 36)
Glacial acetic acid (99.7% ww, sp gr. 1.05, MM
60)
NaOH pellets
NaH2PO4
Bromophenol Blue
Bromocresol green
Phenol red
Methyl red
Methyl orange
Phenolphthalein
Thymol Blue
рH pаper
pH meter
Weighing balance
Na2HPO4
Methodolody: (Include a short summary of the overall experimental plan you are going to run. You
may use flow chart or bullet form for this part. Sketches of any experimental set-ups used in the
experiment or the workup procedures).
Preparation of buffers
1. Prepare 250ml of the following buffer solutions.
Concentration
Buffer solution
pka
Desired ph
0.50 M
Acetate
4.70
5.0
Identify the weak acid and conjugate base of the components of each buffer. Compute the buffer
components using the Henderson-Hasselbalch equation.

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