Suppose that a student is determining the total base content of an antacid tablet by performing a back titration. He/she weighs out a 0.3012 g portion of a tablet whose total weight is 1.5312 g, dissolves this in exactly 40.00 mL of deionized water, and then adds exactly 30.00 mL of 0.1000M HCl in order to bring the pH down to 1.9. This solution is then carefully back-titrated with 0.2000M NaOH, with 12.50 mL required to reach the equivalence point. Calculate the total base content (i.e., the number of mmoles of base contained) of the antacid tablet. (Formula weight of HCL = 36.46 g/m; formula weight of NaOH= 40.00 g/m) A) 0.500 mmolesD) 8.90 mmoles B) 1.75 mmolesE) none of the above C) 2.54 mmoles
Suppose that a student is determining the total base content of an antacid tablet by performing a back titration. He/she weighs out a 0.3012 g portion of a tablet whose total weight is 1.5312 g, dissolves this in exactly 40.00 mL of deionized water, and then adds exactly 30.00 mL of 0.1000M HCl in order to bring the pH down to 1.9. This solution is then carefully back-titrated with 0.2000M NaOH, with 12.50 mL required to reach the equivalence point. Calculate the total base content (i.e., the number of mmoles of base contained) of the antacid tablet. (Formula weight of HCL = 36.46 g/m; formula weight of NaOH= 40.00 g/m) A) 0.500 mmolesD) 8.90 mmoles B) 1.75 mmolesE) none of the above C) 2.54 mmoles
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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Suppose that a student is determining the total base content of an antacid tablet by performing a back titration. He/she weighs out a 0.3012 g portion of a tablet whose total weight is 1.5312 g, dissolves this in exactly 40.00 mL of deionized water, and then adds exactly 30.00 mL of 0.1000M HCl in order to bring the pH down to 1.9. This solution is then carefully back-titrated with 0.2000M NaOH, with 12.50 mL required to reach the equivalence point. Calculate the total base content (i.e., the number of mmoles of base contained) of the antacid tablet. (Formula weight of HCL = 36.46 g/m; formula weight of NaOH= 40.00 g/m)
A) 0.500 mmolesD) 8.90 mmoles
B) 1.75 mmolesE) none of the above
C) 2.54 mmoles
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