1. (a) Perform the calculations required to prepare 100ml of 0.20M sodium acetate buffer of pH 5.40 if you are given a bottle of sodium acetate (M.W = 82) and a bottle of concentrated hydrochloric acid (Normality = 11.M). The pKa of acetic acid is 4.80. (b) After the calculations, prepare the buffer. Check the pH of your reparation and comment on your results. 3. Prepare 1:1, 1:4, 1:10, and 1:100 dilutions of your buffer and obtain pH readings for them. Plot on a graph paper pH against buffer concentration. Explain the shape of the graph.

Curren'S Math For Meds: Dosages & Sol
11th Edition
ISBN:9781305143531
Author:CURREN
Publisher:CURREN
Chapter10: Reconstitution Of Powdered Drugs
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1. (a) Perform the calculations required to prepare 100ml of 0.20M sodium acetate buffer of pH 5.40 if you are given a bottle of sodium acetate (M.W = 82) and a bottle of concentrated hydrochloric acid (Normality = 11.M). The pKa of acetic acid is 4.80. (b) After the calculations, prepare the buffer. Check the pH of your reparation and comment on your results. 3. Prepare 1:1, 1:4, 1:10, and 1:100 dilutions of your buffer and obtain pH readings for them. Plot on a graph paper pH against buffer concentration. Explain the shape of the graph.
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