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Please complete the following table. For each of your trials, enter the mass of crushed antacid tablet (g) dissolved in HCl, the volume of HCl (ml) used to dissolve the sample, the corresponding volume of NaOH (mL) required to reach the endpoint, and the calculated mmoles of HCl needed to neutralize 1 mg of sample. Use the average molarity of your NaOH solution and the average molarity of your HCl solution in your calculations.

Please complete the following table. For each of your trials, enter the mass of crushed antacid tablet (g) dissolved in HCl, the volume of HCl (ml) used to dissolve the sample, the corresponding volume of NaOH (mL) required to reach the endpoint, and the calculated mmoles of HCl needed to neutralize 1 mg of sample. Use the average molarity of your NaOH solution and the average molarity of your HCl solution in your calculations.

Introductory Chemistry: A Foundation
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter7: Reactions In Aqueous Solutions
Section: Chapter Questions
Problem 2ALQ: ssume a highly magnified view of a solution of HCI that allows you to “see” the HCl. Draw this...
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Average HCl 0.421203 Average M NaOH 0.0900235
You measured the mass of 3 antacid tablets. What is the average mass of 1 antacid tablet? Mass (g) Please complete the following table. For each of your trials, enter the mass of crushed antacid tablet (g) dissolved in HCl, the volume of HCl (ml) used to dissolve the sample, the corresponding volume of NaOH (mL) required to reach the endpoint, and the calculated mmoles of HCl needed to neutralize 1 mg of sample. Use the average molarity of your NaOH solution and the average molarity of your HCl solution in your calculations. Trial 1 2 1.110 3 Mass of crushed tablet dissolved in HCl (g) 1.000 1.000 1.000 Volume of HCl used to dissolve samples (ml) 10.00 10.00 10.00 Volume NaOH used (ml) 15.00 14.00 16.00 mmol HCl / mg sample Unrounded 0 A 3 3 Rounded 3 3 3
Transcribed Image Text:You measured the mass of 3 antacid tablets. What is the average mass of 1 antacid tablet? Mass (g) Please complete the following table. For each of your trials, enter the mass of crushed antacid tablet (g) dissolved in HCl, the volume of HCl (ml) used to dissolve the sample, the corresponding volume of NaOH (mL) required to reach the endpoint, and the calculated mmoles of HCl needed to neutralize 1 mg of sample. Use the average molarity of your NaOH solution and the average molarity of your HCl solution in your calculations. Trial 1 2 1.110 3 Mass of crushed tablet dissolved in HCl (g) 1.000 1.000 1.000 Volume of HCl used to dissolve samples (ml) 10.00 10.00 10.00 Volume NaOH used (ml) 15.00 14.00 16.00 mmol HCl / mg sample Unrounded 0 A 3 3 Rounded 3 3 3
по SOLVE * No, the value you entered for the equivalent millimoles HCl per milligram antacid sample is incorrect. Remember that mol/g = mmol/mg. The difference between the millimoles of HCl used to dissolve the sample and the millimoles of NaOH required to titrate the residual acid, when divided by the antacid sample mass in milligrams, is the number you are seeking. At least 6 significant figures should be retained to prevent accumulating rounding errors when the value is used in a subsequent calculation.
Transcribed Image Text:по SOLVE * No, the value you entered for the equivalent millimoles HCl per milligram antacid sample is incorrect. Remember that mol/g = mmol/mg. The difference between the millimoles of HCl used to dissolve the sample and the millimoles of NaOH required to titrate the residual acid, when divided by the antacid sample mass in milligrams, is the number you are seeking. At least 6 significant figures should be retained to prevent accumulating rounding errors when the value is used in a subsequent calculation.
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