Some Basic Principles Of Organic Chemistry Question 141
Question: 0.5 g of hydrocarbon gave 0.9 g water on combustion. The percentage of carbon in hydrocarbon is
Options:
A) 75.8
B) 80.0
C) 56.6
D) 28.6
Show Answer
Answer:
Correct Answer: B
Solution:
% of H $ =\frac{2}{18}\times \frac{wt\text{.of},H_2O}{wt\text{.of organic compound}}\times 100 $
$ =\frac{2}{18}\times \frac{0.9}{0.5}\times 100=20,% $ Since percentage of hydrogen is 20.
Therefore, remaining is carbon i.e.
80 %.
