Hydrocarbons and Crude Oil

Hydrocarbons and Crude Oil

Hydrocarbon - compounds that contain carbon and hydrogen only. Hydrocarbons are saturated and have single bonds.

Crude oil

• Mixture of hydrocarbons.

• Contains molecules in which carbon atoms are chains or rings.

• Important source of useful substances

• A finite resource.

Alkanes

Alkanes react with excess oxygen to produce carbon dioxide and water.

Name

Formula

Boiling point (℃)

Methane

CH4

-161

Ethane

C2H6

-88

Propane

C3H8

-42

Butane

C4H10

-0.5

Pentane

C5H12

36

Hexane

C6H14

69

Heptane

C7H16

98

Octane

C8H18

126

The general formula for all Alkanes is CnH2n+2

Questions - Answers are on the last page.

Q1. Which of the Alkanes are gases at room temperature?

Q2. When Hydrogen burns it makes ………….

Q3. When Carbon burns it makes …………..

Q4. When hydrocarbons burn they make ………….  and  …………..

Q5. Write the symbol equation for the combustion of natural gas (methane) and balance it.

Q6. Octane is in petrol. Write the balanced symbol equation for the combustion of Octane and…