Question

calculate the volume of Methane Gas that must be burnt to produce hundred litre of Co2 at STP

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Answer 1

Answer:

a combustion reaction of a hydro-carbon is governed by the reaction:

CxHy + (x + y/4) O2 = xCO2 + y/2 H2O

While the Hydrocarbon is Ethane , x=2 and y=6 .

Hence the reaction can be written as:

C2H6 + 3.5 O2 = 2 CO2 + 3 H2O

or, 2C2H6 + 7O2 = 4CO2 + 6 H20

So 1 mol of Ethane will evolve 2 moles of CO2, ie, 30 gms of ethane will evolve 2*22.4 l of CO2 at STP, so for 150 gms it is 2*5*22.4= 224 l of CO2.