Benzene

-Structure of benzene

-Hydrolysis of benzene

-Structure of benzene

-Electrophilic substituation of benzene

-Nitrarion of benzene

-Halogenation of benzene

-Freidel-Crafts reaction or allcylation of benzene

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  • Created by: Danielle
  • Created on: 21-11-13 12:12
What are the requirements needed for the nitration of benzene?
1 - Nitric acid 2- Concentrated sulfuric acid 3 - Warm but below 55 degrees 4 - Under reflux
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What are the requirements needed for the halogenation of benzene?
1 - Halogen carrier e.g. AlCl3, FeCl3, FeBr2 2 - Room temperature 3 - Anhydrous conditions
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What are the requirements needed for the allcylation of benzene?
1 - Halogen carrier e.g. AlCl3, FeCl3, FeBr2
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What is the main use of Freidel-Crafts reaction?
Used in industry to make explosives and dyes
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What are the requirements needed for the Freidel-Crafts of benzene?
1 - Halogen carrier e.g. AlCl3, FeCl3, FeBr2
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What are the requirements needed for the hydrolysis of benzene?
1 - Sodium hydroxide 2 - 200 degrees 3 - 200 atm
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What is hydrolysis?
Addition of -OH group
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What is an aromatic structure?
A ring structure
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What is an aliphatic structure?
A straight-chain structure
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What is an electrophile?
Has a positive charge and is an electron lover
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What is alkylation?
The addition of an alkyl group (CH3)
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What is hydrogenation?
The addition of a hydrogen atom
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What does anhydrous conditions mean?
There is no light
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What does under reflux mean?
Evaporation and conditions are occurring at the same time and condensed material returns to the reaction
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What is nitration?
The addition of an NO2 group
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Give some examples of halogen carrier?
AlCl3, FeCl3 & Fe Br2
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What is the Formula for Benzene?
C6H6
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Why was the structure of benzene that Kekule proposed thought to be incorrect?
1 - It did not discolourise bromine like an alkene should. 2 - The hydrogenation values were no as expected. 3 - They found all the bond lengths were the same
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What does the 'ring' in benzenes structure represent?
The ring of delocalised electrons from the p orbitals
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Why is benzene suseptable to electrophilic attack?
Because of the high electron density
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Why is benzene more likely to undergo substitution rather than addition?
Because addition would effect the stability of the molecule making it less stable whereas substitution will not
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Other cards in this set

Card 2

Front

What are the requirements needed for the halogenation of benzene?

Back

1 - Halogen carrier e.g. AlCl3, FeCl3, FeBr2 2 - Room temperature 3 - Anhydrous conditions

Card 3

Front

What are the requirements needed for the allcylation of benzene?

Back

Preview of the front of card 3

Card 4

Front

What is the main use of Freidel-Crafts reaction?

Back

Preview of the front of card 4

Card 5

Front

What are the requirements needed for the Freidel-Crafts of benzene?

Back

Preview of the front of card 5
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