Question

Carius method is used for the estimation of halogen. 0.24 g of an organic compound gave 0.36 g of silver bromide. Percentage of bromine present in the compound is

• A. 28.3%
• B. 66.7%
• C. 63.8%
• D. 15.4%

Answer 1

Answer: (C)

Percentage of bromine
$=\frac{At.massofBr\times MassofAgBrformed\times 100}{Mol.massofAgBr\times Massofcompoundtaken}$
Atomic mass of $Br=80$
Molecular mass of $AgBr=108+80=188$
% of $Br=\frac{80}{188}\times \frac{0.36}{0.24}\times 100=63.8\%$