C7-Hydrocarbons and Fractional distillation.

Question 1

Define a hydrocarbon

Answer 1

Compound which is hydrogen and carbon only.

Question 2

Define Catalytic Cracking

Answer 2

Breaking down a long alkanes using a catalyst in this case broken porous which is aluminium oxide

Question 3

Define Thermal Decomposition

Answer 3

Breaking down a molecule using heat

Question 4

State first 4 alkanes

Answer 4

Methane, propane, ethane butane

Question 5

Generic Formula of alkanes

Answer 5

Cn + 22n+2

Question 6

Fractionating Column(definiton)

Answer 6

It is used to separate hydrocarbons in crude oil

Question 7

What happens to viscosity, boiling point and ease of ignition as you go up fractionating column?

Answer 7

All Increase

Question 8

Process of fractionating column

Answer 8

1- Crude oil heated until it vaporises
2-Hot at bottom and cool at top
3-Vapour condenses to become liquid because substances have dif boiling points.
4-Fractions with small molecules have a low bp so collect gases at the top.