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a) Calculate the pH of a buffer system made up of 0.25 M C6H5COOH and 0.35 M C6H5C00ONA. b)What is the pH after the addition of 20 mL of 0.I M HCI to 500 ml of the above buffer solution? c)Describe how you would prepare a IL solution of 0.I M sodium acetate (CH3CO0Na)/0.I M acetic acid (CH3C0OH) buffer system with a pH of about 5.

a) Calculate the pH of a buffer system made up of 0.25 M C6H5COOH and 0.35 M C6H5C00ONA. b)What is the pH after the addition of 20 mL of 0.I M HCI to 500 ml of the above buffer solution? c)Describe how you would prepare a IL solution of 0.I M sodium acetate (CH3CO0Na)/0.I M acetic acid (CH3C0OH) buffer system with a pH of about 5.

Chemistry
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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the volume of HCL and acetic acid is 250 mL
Solution A: 1.7 x 10-5 M HCI Solution B: 3.40 8 of CH3C0ONa.3H20 in 250 mL of 0.1 M CH3COOH (Buffer solution) 0.IM NaOH and methyl red indicator pH solution steps obseration Solution A Addition of a few drops the colour changes from clear to pink 4.68 of methylred (HCL) Addition of 10 drops of The colour change from clear to pink 4.73 0.1 M NAOH Soluion B Addition of a few drops The colour change from pink to clear of methyl red (buffer solution) Addition of 10 drops of The colour stays the same 4.73 0.1 M NaOH a) Calculate the pH of a buffer system made up of 0.25 M C6H5C0OH and 0.35 M C6H5COONa. b)What is the pH after the addition of 20 mL of 0.I M HCI to 500 ml of the above buffer solution? c)Describe how you would prepare a IL solution of 0.1 M sodium acetate (CH3CO0Na)/0.I M acetic acid (CH3C0OH) buffer system with a pH of about 5.
Transcribed Image Text:Solution A: 1.7 x 10-5 M HCI Solution B: 3.40 8 of CH3C0ONa.3H20 in 250 mL of 0.1 M CH3COOH (Buffer solution) 0.IM NaOH and methyl red indicator pH solution steps obseration Solution A Addition of a few drops the colour changes from clear to pink 4.68 of methylred (HCL) Addition of 10 drops of The colour change from clear to pink 4.73 0.1 M NAOH Soluion B Addition of a few drops The colour change from pink to clear of methyl red (buffer solution) Addition of 10 drops of The colour stays the same 4.73 0.1 M NaOH a) Calculate the pH of a buffer system made up of 0.25 M C6H5C0OH and 0.35 M C6H5COONa. b)What is the pH after the addition of 20 mL of 0.I M HCI to 500 ml of the above buffer solution? c)Describe how you would prepare a IL solution of 0.1 M sodium acetate (CH3CO0Na)/0.I M acetic acid (CH3C0OH) buffer system with a pH of about 5.
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