一道化学题(中学的) 不会做 哪位帮帮忙 谢谢

Doritox

To determine the concentration of a saturated aqueous solution of chlorine.
The concentration of a saturated aqueous solution of chlorine(approximately 7g/dm3) can be determined by a back-titration method.
In 1st stage of the procedure ,thesolution of chlorine is added to an excess of a suitable reducing agent such as an iron(2) compound.
in the 2nd stage the amount of reducing agent left over is determined by titration(the concentration of chloride ions formed in the 1st stage is too low to affect the titration)
Plan and describle a procedure that you could use safely to determine the exact concentration of a saturated aqueous solution of chlorine by bcak-titration.

Plan inciude:
list of apparatus and chemicals needed.
a detailed method which provides full instructions ofor the reactions.
suitabke quantities/concentration of chemicals to use in procedure and calculations to show how you worked out thses quantities
a risk assessment and safety precautions.




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