Some Basic Concepts Of Chemistry Question 188
Question: What is the weight of oxygen required for the complete combustion of 2.8 kg of ethylene [CBSE PMT 1989]
Options:
A) 2.8 kg
B) 6.4 kg
C) 9.6 kg
D) 96 kg
Show Answer
Answer:
Correct Answer: B
Solution:
$ C _2H _4+2O _2\to 2CO _2+2H _2O $
$ \because $ 28gm $ C _2H _4 $ requires 64gm oxygen
$ \therefore $ $ 2.8\times 10^{3} $ gm $ C _2H _4 $ requires = $ \frac{64}{28}\times 2.8\times 10^{3}gm $ $ =6.4\times 10^{3}gm $ = 6.4kg.
