Question

How much oxygen is required for complete combustion of 1,5 kg of ethane

Answer 1

Answer:

Balanced reactio is:

C

2

H

4

+3O

2

→2CO

2

+2H

2

O

molar mass of C

2

H

4

=28 g

molar mass of O

2

=32 g

from the reaction 3×32=96 gO

2

is required for 28 g ethene.

thus 560 g ethene will require =

28

96

×560=1920g O

2

or 1.92 kg oxygen

option B is correct

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Answer 2

Explanation:

Balanced reactio is:

C2H4+3O2→2CO2+2H2O

molar mass of C2H4=28 g

molar mass of O2=32 g

from the reaction 3×32=96 gO2 is required for 28 g ethene.

thus 560 g ethene will require =2896×560=1920g O2

or 1.92 kg oxygen

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