Write balanced, labelled oxidation and reduction half-reactions for the overall redox reaction (the titration of ascorbic acid with iodine) in this experiment. Refer to Section 4.6 in your text (Tro, 2nd Ed.) for additional assistance. Include your academic integrity statement in this question.
Trial 1
Volume of Orange Juice (mL) Final burette reading (mL) Initial burette reading (mL) Volume of iodine used (mL)
24.5 mL 7.90 mL 1.00 mL 0.00 mL
Trial 2
Volume of Orange Juice (mL) Final burette reading (mL) Initial burette reading (mL) Volume of iodine used (mL)
79.0 mL 6.90 mL 8.00 mL 0.16 mL
Trial 3
Volume of Orange Juice (mL) Final burette reading (mL) Initial burette reading (mL) Volume of iodine used (mL)
7.84 mL
Type of Juice: President's Choice
Molarity of standardized iodine (M): 5.40 x 10^-3 M
Trial volume of iodine used (L): 10.0019, 20.0069, 30.0184, 7.9 x 10^-3
Amount of iodine (mol): 4.266 x 10^-5, 3.126 x 10^-5, 9.3336 x 10^-5, <same, 3.10 x 10^-5
Amount of ascorbic acid (mol): 4.260 x 10^-5, 0.152 x 10^-3, 0.745 x 10^-3
Mass of ascorbic acid (g): 0.15, 0.651, 0.145
Mass of ascorbic acid (mg): AVERAGE mass of ascorbic acid (mg): 7.18
