help? EXPERIMENT 9: Titration Analysis of Vitamin.c DATA SHEET 2 Calculated Conc

Question

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EXPERIMENT 9: Titration Analysis of Vitamin.c DATA SHEET 2 Calculated Concentration of NaOH (bottom ofData Sheet I) ·2034 Brand of Vitamin C Tablet: Label Potency of Tablet: B. Titration of Vitamin C Tablets natr Count Trial 1 Trial 2 Trial 3 6 1 6. I o l 2 Mass of Tablet Final Burcte Reading 15,49 1S 6 15.7 intial Berctic Resing .00 0.60 0.60 154S L IS.71 Trial 1 Trial 2 Trial 3 Calculations Volume NaOH Required Moles of NaOH Required Mot Moles of Vitamin C Mass of Vitamin C (mg) 00(m/m) Vitamin C in Tablet 0022 Dni aae 002 0.0029 0029 Avg.ng of Vitamin C Avg. %(m/m) of Vitamin C in the Tablet

Explanation / Answer

trial 1

Calculations:

Mass of Vit. C = mol of Vit.C * MW of VitC = mol*176.12 = 0.0029*176.12 = 0.510748 g of Vit C.

to mg = mass in g* 1000 = 0.510748*1000 = 510.7 mg of Vit C

% m/m of Vit C tablet = mass of Vit C / mas sof table *100% =510.7 /610*10= 8.372 %

Trial 2 and Trial 3, have the same moles of Vit C

average = (8.372 +8.372 +8.372 )/3 = 8.372 %

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