18mL of the diluted solution (S1) are transferred into a 250 ml beaker, then titrated with a solution of HCl of concentration C, = 0.018 mole/L. Using a pH-meter we follow the change of the pH of the mixture as a function of V. (the volume of acid added). The following results are tabulated: V, in ml 2 7 8.5 8.7 8.9 9.1 9.3 | 9.5 | 10 | 11 | 13 15 pH 12 11.8 11.6 11.3 11 10.5 | 10.2 9.2 7 5 4 3.7 3.2 2.7 2.4 | 2.3 2.1- Indicate a convenient glassware that must be used to : 2.1.1 - Withdraw the volume of solution S, . 2.1.2- Add HCI solution 2.2-Write the equation of the titration reaction, list its characteristics. 2.3- Plot the curve pH = f(Va) abscissa 1 cm 1 ml and ordinate 1cm 1 pH units 2.4- Determine graphically the coordinates of equivalence point

18mL of the diluted solution (S1) are transferred into a 250 ml beaker, then titrated with a solution of HCl of concentration C, = 0.018 mole/L. Using a pH-meter we follow the change of the pH of the mixture as a function of V. (the volume of acid added). The following results are tabulated: V, in ml 2 7 8.5 8.7 8.9 9.1 9.3 | 9.5 | 10 | 11 | 13 15 pH 12 11.8 11.6 11.3 11 10.5 | 10.2 9.2 7 5 4 3.7 3.2 2.7 2.4 | 2.3 2.1- Indicate a convenient glassware that must be used to : 2.1.1 - Withdraw the volume of solution S, . 2.1.2- Add HCI solution 2.2-Write the equation of the titration reaction, list its characteristics. 2.3- Plot the curve pH = f(Va) abscissa 1 cm 1 ml and ordinate 1cm 1 pH units 2.4- Determine graphically the coordinates of equivalence point

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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