ALKENES

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  • Created by: samsh
  • Created on: 01-06-16 14:05
Why does geometrical isomerism occur?
due to limited rotation around the carbon(double bond)carbon atom
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What is an electrophile?
electron pair acceptor (attracted to areas of high density)
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Describe the general mechanism (electrophillic addition)
-two elctrons from the carbon(2bond)carbon attack the delta+ x atom forming new bond.which breaks the x-y bond forming a y-. *one carbon is left with only three bonds and is electron deficient (carbocation intermediate) y- then attacks and joins
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describe the test for alkenes
The organic subsatnce is mixed with bromine water, if the substance contains the double bond the bromine water is decolouried (solution turns from orange to colourless)
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Explain why you are more likely to get 2-bromopentane than 1-bromopentane
2-bromopentane is formed via a secondary carbocation, 1-bromopentane is formed via a primary carbocation. the secondary carbocation is more stable therefore 2-bromopentane is the major product.
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Other cards in this set

Card 2

Front

What is an electrophile?

Back

electron pair acceptor (attracted to areas of high density)

Card 3

Front

Describe the general mechanism (electrophillic addition)

Back

Preview of the front of card 3

Card 4

Front

describe the test for alkenes

Back

Preview of the front of card 4

Card 5

Front

Explain why you are more likely to get 2-bromopentane than 1-bromopentane

Back

Preview of the front of card 5

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