Bromine

To a 10 ml 1 M aqueous solution of Br2, excess of NaOH is added so that all Br2 changes to Br- and BrO3-. The resulting solution is freed from Br- by extraction and excess of OH- is neutralized by acidifying the solution. The resulting solution is just sufficient to react with 1.5 gm of an impure CaC2O4 sample. Find percentage purity.
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......................FIITJEE AITS

2 Answers

1357
Manish Shankar ·

I, m getting 12.9%

33
Abhishek Priyam ·

answer given is 85.33% [2]

Hint given is Meq of BrO3-=Meq of CaC2O4 = 10*3
6

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