You prepare a standard NaOH solution for the laboratory, usingpotassium hydrogen phthalate (KHC,H,O,, abbreviated KHP) as theprimary standard. KHP (molar mass = 204.22 g/mol) has one acidichydrogen. It took 31.55 mL of the NaOH solution to titrate (reactexactly with) 0.750 g KHP. You then use the standard base solution todetermine the amount of ascorbic acid in a 500.0 mg tablet of vitaminC. Ascorbic acid (HC̟H,O, molar mass 176.12 g/mol) also has oneacidic hydrogen, and is usually mixed with some filler in preparing thetablets. It requires 19.14 mL of the NaOH to titrate (react exactly with)the ascorbic acid found in one 500.0 mg tablet. What is the percentvitamin C by mass in the tablet?

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the ascorbic acid found in one 500.0 mg tablet. What is the percent vitamin C by mass 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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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

You prepare a standard NaOH solution for the laboratory, using
potassium hydrogen phthalate (KHC,H,O,, abbreviated KHP) as the
primary standard. KHP (molar mass = 204.22 g/mol) has one acidic
hydrogen. It took 31.55 mL of the NaOH solution to titrate (react
exactly with) 0.750 g KHP. You then use the standard base solution to
determine the amount of ascorbic acid in a 500.0 mg tablet of vitamin
C. Ascorbic acid (HC̟H,O, molar mass 176.12 g/mol) also has one
acidic hydrogen, and is usually mixed with some filler in preparing the
tablets. It requires 19.14 mL of the NaOH to titrate (react exactly with)
the ascorbic acid found in one 500.0 mg tablet. What is the percent
vitamin C by mass in the tablet?

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