Question

0.92 g of an organic compound was analysed by combustion method. The mass of the U- tube increased by 1.08 g. What is the percentage of hydrogen in the compound?

• A. 13.04%
• B. 52.17%
• C. 65.21%
• D. 11.30%

Answer 1

Answer: (A)

13.04%

For $\%$ of $H$,

$\%H/H_{2}O=\frac{2}{18}\times \frac{Wt.of{H}_{2}O}{\text{Wt. of organic compound}}\times 100=\frac{2}{18}\times \frac{1.08}{0.92}\times 100=13.04\%$

Hence, $A$ is correct answer.