140. Solving a chemistry problem

140. Solving a chemistry problem

13. A weighed portion of antimony weighing m g was transferred into a solution and the aluminum contained as an impurity was isolated in the form of oxyquinolinate. After purification and dissolution of the precipitate in hydrochloric acid, a coulometric titration of oxyquinoline with bromine generated from KBr at a constant current strength of 8.5 mA was carried out.The equivalence point found biamperometrically corresponded to the electrolysis time t.
Calculate the mass fraction (%) of aluminum in antimony according to the following data:
Option 1
m, g 0.5000
t, s 114

Additional information:

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.