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Alkenes.

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Presentation on theme: "Alkenes."— Presentation transcript:

1 Alkenes

2 Alkenes General Formula CnH2n
Ethene C2H4 Propene C3H6 But-1-ene C4H8 But-2-ene C4H8

3 Alkenes Alkenes are unsaturated hydrocarbons, as they contain a carbon-carbon double bond

4 Ethene C2H4

5 Propene C3H6

6 But-1-ene C4H8

7 But-2-ene C4H8

8 Alkenes Alkene molecules are planar, e.g. ethene

9 Physical properties Physical state: Gases Insoluble in water
Soluble in non-polar solvents such as cyclohexane

10 Uses Used to make plastics, e.g. ethene is used to make polythene
Ethene is used to make ethanol for industrial use

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