For quality control, a chemist analyses the vitamin C (molecular formula CH&O6) content of a new brand of fruit juice. The reaction is: C6H&O6(aq) + I3 (aq) CH6O6(aq) + 2H (aq) +31 (aq) A 20.00 mL sample of the fruit juice was made up to 250.0 mL with pure water in a volumetric flask. 25.00 mL aliquots of the diluted fruit juice were then placed in a conical flask and titrated with a solution in which [I3] 2.00 x 104 mol L1 An average titre of 15.65 mL was obtained. (a) Calculate the amount of I3 present in the average titre, in mole. (b) Calculate the amount of vitamin C present in each 25.00 mL aliquot, in mole. (c) Calculate the concentration of vitamin C in the original (undiluted) sample of fruit juice in mole per litre.
For quality control, a chemist analyses the vitamin C (molecular formula CH&O6) content of a new brand of fruit juice. The reaction is: C6H&O6(aq) + I3 (aq) CH6O6(aq) + 2H (aq) +31 (aq) A 20.00 mL sample of the fruit juice was made up to 250.0 mL with pure water in a volumetric flask. 25.00 mL aliquots of the diluted fruit juice were then placed in a conical flask and titrated with a solution in which [I3] 2.00 x 104 mol L1 An average titre of 15.65 mL was obtained. (a) Calculate the amount of I3 present in the average titre, in mole. (b) Calculate the amount of vitamin C present in each 25.00 mL aliquot, in mole. (c) Calculate the concentration of vitamin C in the original (undiluted) sample of fruit juice in mole per litre.
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter4: Stoichiometry
Section: Chapter Questions
Problem 4.58PAE
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