Ascorbic acid (0 010 0 M) was added to 10 0 mL of 0 020 0 M Fe 3 in a solution buffered to pH 0 30, and the potential was monitored with Pt and saturated Ag AgCl electrodes Dehydroascorbic acid 2H 2e ascorbic acid H 2 O E 0 390 V (a) Write a balanced equation for the titration reaction (b) Using E 0 767 V for the Fe 3 Fe 2 couple, calculate the cell voltage when 5 0, 10 0, and 15 0 mL of ascorbic acid have been added

Question: Ascorbic acid (0.010 0 M) was added to 10.0 mL of 0.020 0 M Fe 3+ in a solution buffered to pH 0.30, and the

Ascorbic acid (0.010 0 M) was added to 10.0 mL of 0.020 0 M Fe³⁺ in a solution buffered to pH 0.30, and the potential was monitored with Pt and saturated Ag | AgCl electrodes.

Dehydroascorbic acid + 2H⁺ + 2e^- ⇌ ascorbic acid + H₂O E° = 0.390 V

(a) Write a balanced equation for the titration reaction.

(b) Using E° = 0.767 V for the Fe³⁺ | Fe²⁺ couple, calculate the cell voltage when 5.0, 10.0, and 15.0 mL of ascorbic acid have been added.

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