Alkenes.

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Presentation transcript:

Alkenes

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

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

Ethene C2H4

Propene C3H6

But-1-ene C4H8

But-2-ene C4H8

Alkenes Alkene molecules are planar, e.g. ethene

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

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