You have a job as a summer intern in an orange juice processing plant. Part of your job is to determine the amount of vitamin C in a given quantity of orange juice. To make this determination, you titrate the orange juice with I₃^-, the triiodide ion. To make sure you know what you are doing, your supervisor asks you how many electrons are transferred in the reaction. The reaction describing the titration is given below. What is your response?
Ascorbate + H₂O + I₃^- $\rightarrow$ dehydroascorbate + 2H⁺ + 3I^-

Question

You have a job as a summer intern in an orange juice processing plant. Part of your job is to determine the amount of vitamin C in a given quantity of orange juice. To make this determination, you titrate the orange juice with I₃^-, the triiodide ion. To make sure you know what you are doing, your supervisor asks you how many electrons are transferred in the reaction. The reaction describing the titration is given below. What is your response?
Ascorbate + H₂O + I₃^-

\rightarrow

dehydroascorbate + 2H⁺ + 3I^-

Quizplus · Accepted Answer

The reaction shows that ascorbate loses two electrons to form dehydroascorbate, while three triiodide ions each gain one electron to form iodide ions. Therefore, a total of 2 electrons are transferred in the reaction.

You Have a Job as a Summer Intern in an Orange