Question

When a gaseous olefinic hydrocarbon is burnt
completely in excess of 02, a contraction in
volume equal to double to the volume of
hydrocarbon is noticed then hydrocarbon will be

Answer 1

Answer:

Let a olefinic hydrocarbon CxHy Acc. to question CxHy+O2=xCo2+y/2h20

contraction in volume =volume of hydrocarbon+volume of O2-volume of co2

so contraction volume=4+y/4Acc. to question 4+y/4=2 volume of hydrocarbon

soy=4

The given hydrocarbon is the gasoeus form so that contraction volume of Co2=contraction volume of h2o

And then x=y/2 x=2 Hydrocarbon is C2H4