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Question

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


A
2.8 kg
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B
6.4 kg
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C
9.6 kg
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D
96 kg
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Solution

The correct option is B 6.4 kg
C2H4+2022CO2+2H2O
2gmC2H4 requires 64gm oxygen
2.8×103gmC2H4 requires=6428×2.8×103gm
=6.4×103fm=6.4kg

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