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PART 1: Concentration of vitamin Cin fruit juice: DATA FRUIT JUICE: Type of juic

ID: 505052 • Letter: P

Question

PART 1: Concentration of vitamin Cin fruit juice: DATA FRUIT JUICE: Type of juice: volume of container: 225 Servings per container: Volume per serving RDA of vitamin C per serving: RDA for vitamin C: 90 mg Calculated concentration of vitamin C based on packaging:n 20 mg/mL Calculated molar concentration of vitamin cbased on packaging mol/L. (assume molar mass is equal to that of ascorbic acid, 176.12 g/mol) Titration Data: Concentration of lodine Standard (on bottle): o.op5M. 5. Trial 1 Trial 3 Trial 2 Initial Buret Reading: Final Buret Reading: 8.8ml. volume of Iodine solution: -L Moles of lodine Added H 35 o 4. tisio Moles of vitamin Cin solution: o Measured concentration of vitamin Cin fruit juice (mol/L): Average concentration of vitamin Cin fruit juice (mol/L): Error relative to label:

Explanation / Answer

Given

RDA of vitamin C = 90 mg

Volume of serving = 297 ml

Concentration of Vitamin C = 90 mg / 297 ml = 0.305 mg/ml

Calculated concentration of vitamin C based on packaging = 0.305 mg/ml = 0.305 g/L

Molar mass of vitamin C = 176.12 g/mol

Molarity or concentration of Vitamin C = mass / molar mass = 0.305 g/L / 176.12 g/mol = 1.73 * 10-3 mol/L