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=218×Weight,of,H2OWeight,of,organic,compound,×100

=218×0.90.5×100=20 Since percentage of hydrogen is 20. Therefore, remaining is carbon, i.e., 80%.

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