6. When calibrating NaOH solution, both oxalic acid (H,C,0̟• 2H,O) and potassium hydrogen phthalate (KHC,H,O,) can be used as reference materials. If c(NaOH) ~ 0.05 mol·L1, which reference material is better ? If c(NaOH) ~ 0.2 mol • L1, which reference substance is better? (Considering from weighing error) 8. If the H,C,0,• 2H,0 reference substance is stored in a desiccator for a long time to calibrate the concentration of the NaOH solution, will the result be higher or lower? When using this NaOH solution to determine the molar mass of organic acids, is the result higher or lower?
6. When calibrating NaOH solution, both oxalic acid (H,C,0̟• 2H,O) and potassium hydrogen phthalate (KHC,H,O,) can be used as reference materials. If c(NaOH) ~ 0.05 mol·L1, which reference material is better ? If c(NaOH) ~ 0.2 mol • L1, which reference substance is better? (Considering from weighing error) 8. If the H,C,0,• 2H,0 reference substance is stored in a desiccator for a long time to calibrate the concentration of the NaOH solution, will the result be higher or lower? When using this NaOH solution to determine the molar mass of organic acids, is the result higher or lower?
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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