12. Two samples of process water, V ml each, were transferred to separatory funnels. 10.0 ml of a solution with a concentration of Cst mg/l xanthate were added to one of the samples, and 10.0 ml of water to the other. Nickel sulfate and the necessary reagents were added to each sample, and nickel xanthate was extracted several times with 1.5 ml of toluene. The extracts were collected and the volumes were brought to 250.00 ml with toluene. The resulting solutions were photometrically measured to obtain Ax and Ax st. Calculate the concentration (mg/l) of xanthate in industrial water using the following data:
Option V, ml Cst, mg/l Ax Ax st
1 100 50 0.180 0.560
2 200 5 0.300 0.630
3 25 300 0.280 0.740
Solution for option 1

If you cannot open the file or have any problems, do not rush to leave a negative review! Contact me and I will quickly help you solve the problem. After purchasing, please leave a positive review of the product :)