OCR A2 planning task...help! Watch
"To determine the concentration of a saturated aqueous solution of chlorine
The conc of a saturated aqueous solution of chlorine(approx 7g dm-3) can be determined bya back titration method.
In the first stage of the procedure the solution of chlorine is added to an excess of a suitable reducing agent such as an iron(II) compound.
In the second stage the amount of reducing agent left over is determined by titration. (The conc of chloride ions formed in the first stage is too low to affect the titration)
Plan and describe a procedure that you could use safely to determine the exact concentration of a saturated aqueous solution of chlorine by back titration"
We've only ever done one back titration at school and i didnt understand it that time! lol
the real ocr a2 planning exercise is on the thread called a2 ocr chemistry planning exercise!
secondly i'm using FeSO4 as the reducing agent. Is this fine to use just as it is or do i need to add anything to it?
thanks in advance!