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Chemistry Year 12 > Alkenes 3.3.4 > Flashcards

Alkenes 3.3.4 Flashcards

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1
Q

what’s the general formula for alkenes

A

CnH2n

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2
Q

what is an alkene

A

unsaturated hydrocarbon ( has a C=C)

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3
Q

Why is it different to an alkane

A

It’s much more reactive than alkanes

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4
Q

what are some of the physical properties of alkenes

A

Insoluble in water
melting point and boiling point increased in chain length so VDW forces are stronger if the chain is longer

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5
Q

what is the test for an alkene

A

Shake with bromine water
orange to colourless

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6
Q

why is the double bond important in creating E-Z isomers

A

Double bond caused a restricted rotation

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7
Q

define stereoisomerism

A

same structural forumla but atoms / groups have different spacial arrangements

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8
Q

what are the conditions for electrophilic addition reaction of an alkene to a dihaloalkane

A

Br2
Room temp
Electrophile

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9
Q

what are the conditions needed for electrophilic addition reaction of an alkene to a haloalkane

A

HBr
Room temp

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Chemistry Year 12 (12 decks)

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