Some Basic Concepts Of Chemistry Question 156
Question: About 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:
[b] % of $ H=\frac{2}{18}\times \frac{Weight,of,H _2O}{Weight,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%.
