43. What volume of a hydrogen peroxide solution, prepared by diluting 20 ml of a 3% solution (p = 1 g / ml) to 250 ml, must be taken so that 25 ml of a 0.045 N solution of thiosulfate go for titration (after treatment with KI and HCl).
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