Hello everyone.

Could you help me with the following problem.

I am going to determine ascorbic acid in capsules using an AOAC method. The method gives the following equation:

mg ascorbic acid/capsules = (X-B)*(F/E)*(V/Y), where:

X = average ml for titration of the test solution.

B = average ml for the titration of the test blank

F = mg of ascorbic acid equivalent to 1.0 ml of indophenol standard solution

E = number of g, tablets, ml, etc. analyzed,

V = initial volume of test solution,

Y = volume of titrated test solution,

Assuming that: X = 10 mL, B = 0.1 mL, E = 3 capsules, V = 7 mL and Y = 2 mL. How do I determine the value of F?

With the data I have, can I calculate its value? Or do I need additional information?

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