4. A sample of 0.2000 g of ore containing MnO2 was treated with an excess of concentrated HCl. The Cl2 formed during the reaction was distilled off and KI was absorbed. 42.50 cm3 of 0.05200 N thiosulphate solution was used for titration of the released iodine. How much MnO2 (in %) does the ore contain?
If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.
No feedback yet