Fuels and crude oil Flashcards
1
Q
What do natural gas consist of
A
Methane propane butane and ethane
2
Q
Properties of small molecules
A
Low boiling point
Light i colour
flammable
runny
3
Q
Property of large molecules
A
high bp
dark in colour
not flammable easily
thick
4
Q
Order of gases (descending order)
A
Petroleum ( PPNKDLB)
Petrol
Naphtha - petrochemical
kerosene - fuel for jet
diesel
lubricating oil
bitumen
5
Q
Steps of fract
A
Petroleum is heated and vaporised
hot vapour flow up, as it cools down each fraction of the vapour condenses when the temperature of column lower than bp
Ligher fraction lower bp bp ranges will distill at the top
6
Q
characteristic of physcial properties
A
Mp density and vicosity increase down the group
flammability decrease
