. A sample of fresh grapefruit juice was filtered and titrated with the above I2 solution. A 100 mL sample of the juice took 9.85 mL of the iodine solution to reach the starch endpoint.

Question

a) What is the concentration of vitamin C in the juice in mg vitamin C/100 mL of juice (mg/ 100 mL)?

Answer 1

And what, pray tell, is the molarity of the I2 solution used. As posted this is not workable.