Hello everybody,
I'm studying LL extraction of Cr(VI). The feed aqueous solution is prepared by dissolving required amount of K2Cr2O7 in distilled water and the pH of the solution is adjusted to about 1 by adding appropriate amount of HCl. After extraction, I know that the Cr concentration will be below 10 ppm. It is worth mentioning that the solution does not contain Cr(III).
I need to determine Cr (VI) concentration in the aqueous solution after extraction, using a titration. Could you help me to know the procedure?
Thank you for your guidance in advance.
Dear Mehdi,
You can titrate your solution with standard FeSO4 solution. But you have to use H2SO4 insted of HCI for the acidification.
You have to use ferroin indicater to determine end point
Piyal Aravinna
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