How many mg of ascorbic acid are present in the 3 month old sample? A 492.53 mg B 488.12 mg c) 452.58 mg 435,91 mg

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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A multivitamin sample has a label claim of 500 mg ascorbic acid (176.12 g/mol). According to quality assurance guidelines for stability, it has an acceptable range of 90.0%-110.0% of the label claim. After production, the multivitamin was analyzed through acid-base titration, and the sample needed 25.40 mL of a 0.1101 M NaOH titrant to reach the end point. After 3 months, the same multivitamin was analyzed again, and this time 23.34 mL of the same 0.1101 M titrant was used. After 6 months, the same multivitamin was analyzed again, and this time, 22.48 mL of the same 0.1101 M NaOH titrant was needed to reach the end point.

 

How many mg of ascorbic acid are present in the 3 month old sample?
A) 492.53 mg
488.12 mg
c) 452.58 mg
D) 435.91 mg
Transcribed Image Text:How many mg of ascorbic acid are present in the 3 month old sample? A) 492.53 mg 488.12 mg c) 452.58 mg D) 435.91 mg
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