Q17 / 180 · COMEDK 2015 · Chemistry
An organic compound weighing $0.15 \mathrm{~g}$ gave on Carius estimation, $0.12$ gf $\mathrm{AgBr}$.
The percentage of Br in the compound will be close to (Atomic mass of Ag $=108, \mathrm{Br}=80$ )
- A$46 \%$
- Correct answerB$34.1 \%$
- C$3.41 \%$
- D$4.6 \%$
Solution
Percentage of bromine in the compound
$$
\begin{aligned}
&=\frac{80}{188} \times \frac{\text { Mass of } \mathrm{AgBr} \text { formed }}{\text { Mass of substance taken }} \times 100 \\
&=\frac{80}{188} \times \frac{0.12}{0.15} \times 100=34.04 \%
\end{aligned}
$$
Hence, the correct answer is option: 'B'.