Question

For complete combustion of 3g ethane find required moles of O2 and formed moles of CO2 . Also find volume of O2 and CO2 at STP

Answer 1

Answer:

Explanation:

We know of a general formula CxHy+(x+y/4)O2------xCO2+y/2H2O

Given hydrocarbon is ethane=C2H6

x=2 y=6

O2

From above 1 mole of C2H6 require (2+6/4)mole of O2

30 gms of ethane give (2+3/2) mole of CO2

30 gms of ethane give 3.5 mole of O2

3gms give 0.35 mole of O2

1mole of O2 at STP require 22.4 ml

0.35 Mole gives 7.84 ml

CO2

1 mole of ethane give 2 moles of CO2

3gms of ethane give 0.2 moles of CO2

1 mole give 22.4ml

0.2 moles give 4.48 ml

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