Bromine

AIEEE 2015 Online › Physical Chemistry questions › 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.
[7]

......................FIITJEE AITS

#Chemistry #Physical Chemistry

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2 Answers

1357

Manish Shankar ·2009-01-16 01:20:41

I, m getting 12.9%

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33

Abhishek Priyam ·2009-01-16 03:19:44

answer given is 85.33% [2]

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