1. Ascorbic acid can be reduced to dehydroascorbic acid. True/False 2. When does
ID: 544109 • Letter: 1
Question
1. Ascorbic acid can be reduced to dehydroascorbic acid.
True/False
2. When does the titration endpoint occur in the Vitamin C analysis lab (be specific)?
3. An unknown sample is initially analyzed and found to have a peak intensity of 3250 counts. A 10 ppm standard of the same sample shows a peak intensity of 1250 counts. What is the concentration of the unknown sample?
4. What is the primary use of the chromatograms from a GC-MS instrument?
5. What is the concentration, in ppm, that results when 5 mg of a compound is dissolved in 2000 grams of solvent?
Explanation / Answer
1. Ascorbic acid can be reduced to dehydroascorbic acid.
False
dehydroascorbic acid is the oxidized form of Ascorbic acid as hydrogen atom is lost .The reversibly oxidation of Ascorbic acid gives dehydroascorbic acid.
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