Question

$0.58g$ of hydrocarbon on combustion gave $0.9g$ water. The percentage of carbon is about

• A. 75.8
• B. 82.7
• C. 27.85
• D. 68.8

Answer 1

Answer: (B)

Percentage of $H=\frac{2}{18}\times \frac{0.9}{0.58}\times 100=17.24\%$

$\therefore$ Percentage of $C=100-$ Percentage of $H$

$=100-17.24=82.7\%$