ALKANEREACTION

S

REACTION

MECHANISM

REACTION MECHANISM

•Is a step by step description of how a

chemical reaction occurs.

SUBSTITUTION

REACTION

SUBSTITUTION REACTION

• Is a chemical reaction in which an atom or group on a molecule is replaced by another atom or group.

NOTE: replacement by a halogen is called HALOGENATION reaction …..

EXAMPLE

GENERAL FORMULA

Alkane + Halogen -----------→ Haloalkane + Hydrogen Halideslightheat

H │H – C – H │ H

METHANE

+Cl – Cl

Cl2 --------→heatlight

H │H – C – Cl │ H

H – Cl +

chloromethane

HYDROGEN CHLORIDE

methylchloride

INDUSTRIAL

APPLICATIONS

COMBUSTION

REACTION

COMBUSTION REACTION

• Is a chemical reaction wherein hydrocarbon reacts with

oxygen and produces Carbon Dioxide and water.

NOTE: great amount of heat is released in this reaction…..

EXAMPLE

GENERAL FORMULA

Hydrocarbon (Alkane) + Oxygen -----------→ Carbon Dioxide + Water

METHANE

+ --------→ H2O +CH4 CO2 2 O2 2

C2H6

ETHANE

+ O2 --------→ CO2 67 42 + H2O

INDUSTRIAL

APPLICATIONS