Anita Akweshie-
how many functional groups do organic compounds usually have
one or more
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what is a functional group
an atom/group of atoms in an organic compound that determines the chemical and physical properties of the compound
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what are arenes
organic compounds that contain a benzene ring
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chemical property of arenes (1)
due to delocalised electron-ring are electron-rich and can undergo electrophilic attack by strongly positively charged
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chemical properties of arenes (2)
resistant to addition reactions because the delocalised electron-ring system makes benzene very stable
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arenes are very different from
alkenes
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how are alkenes very different from arenes
alkenes are very reactive and undergo additional reactions while arenes are stable and undergo electrophilic attack
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physical properties of arenes (1)
benzene has Van der Waal dispersion forces of attraction between molecules and so have a low boiling point
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physical properties of arenes (2)
insoluble in water due to the nonpolar hydrocarbon part
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what would need to happen in order for benzene to become soluble and why doesn't it
benzene should break the hydrogen bonds in water which is not energetically feasible
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what are halogenoarenes
aromatic compounds that contain a halogen bonded to a benzene ring
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what are halogenoarenes also known as
aryl halides
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chemical properties of halogenoarenes (1)
prone to electrophilic attack due to the pi-ring
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chemical properties of halogenoarenes (2)
halogens can take part in substitution reactions
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physical properties of halogenoarenes (1)
chloro-, bromo-, and iodo- benzene are all liquid with an oily texture at rtp
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physical properties of halogenoarenes (2)
boiling point increases if the halogen size increases due to an increase number of electrons
