Question

# What is the weight of oxygen that is required for the complete combustion of 2.8 kg of ethylene ?

A
9.6 kg
B
96.0 kg
C
6.4 kg
D
2.8 kg

Solution

## The correct option is A 9.6 kg$$\underset{(12\times 2 +4)}{C_2H_4} + \underset{96 \, kg}{3O_2} \rightarrow 2CO_2 + 2H_2$$$$= 28 kg$$$$\because$$ Weight of oxygen required for the Complete combustion of 28 kg ethylene = 96 kg $$\because$$ Weight of oxygen required for the combustion of 2.8 kg ethylene.$$=\dfrac {96 \times 2.8}{28}= 9.6 \, kg$$Hence, the correct option is $$A$$Chemistry

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