Benzene

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What is a halogen carrier?
An atom or molecule that induces a dipole in a halogen molecule, such as bromine or chlorine.
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Name C₆H₅NO₂.
Nitrobenzene.
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True or False: Benzene decolourises bromine water.
False. Benzene doesn't decolourise bromine water as the bromine molecules aren't strong enough to attack the benzene ring without a halogen carrier.
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What is an arene?
Arenes are aromatic hydrocarbons containing one or more benzene rings.
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Conditions for preperation of nitrobenzene.
Concentrated hydrochloric acid, concentrated sulphuric acid, at 50 C.
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True or False: Benzene takes part in addition reactions.
False. Benzene doesn't take part in addition reactions as the delocalised ring of electrons is too stable. However it does take part in substitution reactions.
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What is a substitution reaction?
A substitution reaction is one in which am atom or group of atoms is replaced with a different atom or group of atoms.
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What is the catalyst needed for nitration of benzene?
Sulphuric acid.
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Which is more reactive; cyclohexene or benzene?
Cyclohexene as it has a concentrated area of high electron density in comparison with benzene, that has a more spread out electron density around the delocalised ring of electrons.
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True or False: Benzene doesn't react with strong acids such as HCl.
True. Benzene doesn't react with strong acids.
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What is an electrophile?
An electrophile is an atom (or group of atoms) that is attracted to an electron rich centre, where it accepts a pair of electrons to form a new covalent bond.
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Examples of halogen carriers.
FeCl₃, FeBr₃, AlCl₃.
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What is an addition reaction?
An addition reaction is one in which a reactant is added to an unsaturated molecule to make a saturated molecule,
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Other cards in this set

Card 2

Front

Name C₆H₅NO₂.

Back

Nitrobenzene.

Card 3

Front

True or False: Benzene decolourises bromine water.

Back

Preview of the front of card 3

Card 4

Front

What is an arene?

Back

Preview of the front of card 4

Card 5

Front

Conditions for preperation of nitrobenzene.

Back

Preview of the front of card 5
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