CH2 Revision (Halogenoalkanes)

These flashcards should provide the basic information on topic 7.3 for the WJEC Chemistry board. 

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What is a halogenoalklane?
A homologous series in which one or more hydrogen atoms in an alkane has been replace by a halogen.
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What is hydrolysis?
A reaction with water to produce a product.
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What is a nucleophile?
A species with a lone pair of electrons that can be donated to an electron deficient centre.
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What are CFC's?
Halogenoalkanes containing both fluorine and chlorine.
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Chlorine + Ag+(aq) ions
White precipitate and dissolves in dilute ammonia.
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Bromine + Ag+(aq) ions
Cream precipitate and dissolves in concentrated ammonia.
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Iodine + Ag+(aq) ions
Yellow precipitate and doesn't dissolve in ammonia.
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Solubility of halogenoalkanes?
Although they are polar, they do not contain an O-H or N-H group which can hydrogen bond with water molecules. They are therefore insoluble in water. They can be used for degreasing; chloro compounds are often used as these are the cheapest.
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Boiling temperature of halogenoalkanes?
Halogenoalkanes have a boiling point very close to room temperature, gases can therefore be liquefied and liquids can be evaporated easily.
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Uses of halogenoalkanes?
Fire extinguishers, Refrigerants, Propellants and Anesthetic (trichloromethane)
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Environmental effects pf CFC's?
CFC's undergo radical chain reactions that deplete the ozone layer.
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Other cards in this set

Card 2

Front

What is hydrolysis?

Back

A reaction with water to produce a product.

Card 3

Front

What is a nucleophile?

Back

Preview of the front of card 3

Card 4

Front

What are CFC's?

Back

Preview of the front of card 4

Card 5

Front

Chlorine + Ag+(aq) ions

Back

Preview of the front of card 5
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