Given that the expected amount of ascorbic acid in Vitamin C tablets should be 1000 mg, using stoichiometry, back calculate the expected volume in mL of ~0.20 M NaOH (you will find the exact concentration in lab close to this value and later calculate % error based on a new number) you would need to titrate the Vitamin C tablets. This calculation will help you predict where to slow down your base addition in the titration as you approach your endpoint. Here are a few hints: We assume a 1:1 mole ratio of ascorbic acid to NaOH o If you're given mass of ascorbic acid, you should calculate the moles of ascorbic acid present, convert this into moles of NaOH and then using the concentration of NaOH, you may calculate the volume required of NaOH to neutralize the acid present in the tablet
Given that the expected amount of ascorbic acid in Vitamin C tablets should be 1000 mg, using stoichiometry, back calculate the expected volume in mL of ~0.20 M NaOH (you will find the exact concentration in lab close to this value and later calculate % error based on a new number) you would need to titrate the Vitamin C tablets. This calculation will help you predict where to slow down your base addition in the titration as you approach your endpoint. Here are a few hints: We assume a 1:1 mole ratio of ascorbic acid to NaOH o If you're given mass of ascorbic acid, you should calculate the moles of ascorbic acid present, convert this into moles of NaOH and then using the concentration of NaOH, you may calculate the volume required of NaOH to neutralize the acid present in the tablet
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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