Alkenes
Chapter Name : Hydrocarbons |
Sub Topic Code : 102_11_13_03_06 |
Topic Name : Alkenes |
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Sub Topic Name : Chemical Properties |
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Introduction
In organic chemistry, an alkene is an unsaturated chemical compound containing at least one carbon–carbon double bond. The simplest acyclic alkenes, with only one double bond and no other functional groups, known as mono-enes, form a homologous series of hydrocarbons with the general formula CnH2n.
Pre-Requisites:
Alkenes
Activity:
Raincoats.
Real Life Question:
What are alkenes?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| alkenes | An alkene is a hydrocarbon containing a double carbon-carbon bond. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| ethylene | Ethylene glycol is produced from ethylene, via the intermediate ethylene oxide. Ethylene oxide reacts with water to produce ethylene glycol |
Real life uses :
Making plastics by polymerization.
Places to visit :
Chemistry laboratory.
Practical examples around us
| Examples | Explainations |
|---|---|
| Propene | Propene, also known as propylene or methyl ethylene, is an unsaturated organic compound having the chemical formula C3H6. It has one double bond, and is the second simplest member of the alkene class of hydrocarbons. |
What you learn in Theory:
Alkenes are more reactive than alkanes due to the presence of a double bond. The carbon-carbon double bond consists of a strong bond and a weak p bond. The typical reactions of alkenes involve the breaking of this weaker p bond, viz., and formation of two sigma (s) bonds.
What you learn in Practice:
The alkenes are highly flammable and burn readily in air, forming carbon dioxide and water.