Organic Chemistry Flashcards
What is crude oil
A mixture of hydrocarbons
What does fractional distillation do and explain the process
Separates crude oil into fractions. Heated and oil evaporates… smaller molecules condense higher of the tower, larger molecules condensed low down into the tower.
What is the role of bitumen
For road surfacing
What is the role of fuel oil
For ships
What is the role of diesel
Fuel for cars/lorries/busses
What is the role of kerosene
Aircraft fuel
What is the role of gasoline
Fuels for cars
What is the trend in boiling point of the main fractions
The boiling point increases as the number of carbon atoms increases.
What is the trend in viscosity of the main fractions
Viscosity increases as the number of carbon atoms increases
What is the trend in colour of the main fractions.
The greater the number of carbon atoms the darker in colour.
What is the trend in viscosity of the main fractions
Viscosity increases as the number of carbon atoms increase
What happens when fuel is burned
It releases heat energy(exothermic reaction)
What is complete combustion
Complete combustion happens in a reaction when there is enough oxygen available producing carbon dioxide and water.
Give an example of a complete combustion reaction.
Methane + oxygen -> Carbon dioxide + water
CH4 +202 ->CO2 + 2H20
What is incomplete combustion
Incomplete combustion happens in a reaction when there is not enough oxygen available
What are possible products that can be produced in incomplete combustion
Carbon monoxide, carbon(soot), carbon dioxide and water
Give an example of incomplete combustion
Ethane + oxygen -> carbon monoxide + water
C2H6 + 2.5 02 -> 2CO + 3H20