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Question

44gm of a sample on complete combustion gives 88 gm CO2 and 36 gm of H2O. The molecular formula of the compound may be:

A
C4H6
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B
C2H6O
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C
C2H4O
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D
C3H6O
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Solution

The correct option is C C2H4O
CO2=8844=2 moles of CO2=2 mole of C
H2O=3618=2 moles of H2O=2 mole of H
Mass of C + Mass of H + Mass of O=44
24+4+x=44;x=16
mole of O=1 and molecular formula is C2H4O.

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