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The Applications of Haloalkanes
Transcript of The Applications of Haloalkanes
(Haloalkane Reactions) There are three (3) different types of Haloalkanes, each with their own physical and chemical properties. These three kinds of Haloalkanes are called Primary, Secondary, and Tertiary.
Primary Haloalkanes contains a carbon atom that is bonded to a halogen atom and only one (1) alkyl group.
Secondary Haloalkanes contains a carbon atom that is bonded to a halogen atom with a total of two (2) alkyl groups.
Tertiary Haloalkanes contains a carbon atom that is bonded to a halogen atom with a total of three (3) alkyl groups. Different Forms / Kinds of Haloalkanes Applications!!! The Applications of Haloalkanes HALOALKANES What are Haloalkanes? Haloalkanes are organic compounds/hydrocarbons that contain at least one halogen atom bond to a carbon atom. For example, Bromine (Br), Chlorine (Cl), Iodine (I), and so on. They are also called Alkyl Halides or Halogenoalkanes. Characteristics Electronegativity Physical Features Similar to alkanes, the boiling point increases as the number of present
carbon atoms increase. In Haloalkanes, chlorides have the smallest
boiling point and iodides having the biggest boiling point, leaving bromide
with the more central boiling point.
The Haloalkanes: Methyl chloride (Chloromethane),
Methyl bromide (Bromomethane), and Ethyl chloride (Chloroethane)
are all gases at room temperature. Fluorine, having the greatest electronegativity, creates the most polarity between the bonding of a halogen atom and the alkyl group(s), then Chlorine, and so on... Haloalkanes are colourless and transparent when pure/purified.
However when Bromides and Iodides become exposed to any light source, begin to change in colour. Tetrafluroethane CFC'S and HFC'S
and Hydrofluorocarbons) Chlorofluorocarbons Refrigerants Refrigerants Plastics Chloroethene, CH2=CHCl,
Tetrafluoroethene, CF2=CF2 MAKING Ethyl Bromide (BROMOETHANE) YOUTUBE VIDEO!!!!!!!!!!!!! Substitution Reaction with alkanes
Addition Reaction with alkenes
Substitution reaction with alcohols and halides Thank You for watching
our Presentation! Refrigerants are compounds used in heat cycles, and change state from gas to liquid and back, that repeats.
Air Conditioning... 1,1,2,2-Tetrafluoroethane Were used as refrigerants and aerosol can propellants, because CFC's are not toxic and are not flammable.
CFC's have been banned in 1978, due to the environmental consequences.
When the CFC's reach higher up into the atmosphere the chlorine bonds weaken and seperate themselves from the alkyl group(s), which lead to the destruction of the ozone layer above Antarctica.
CFC's have been replaced by HFC's (hydrofluorocarbons), HCFCs (Hydrochlorofluorocarbons), and regular hydrocarbons (E.g propane). Fire Retardants Fire Retardants Fire Retardants are used to weaken, control, and or get of fires.
The haloalkane: Pentafluoroethane,
(also known as HFC-125) is used as a fire retardant because, the molecules in HFC-125 can absorb the amount of heat energy radiating from the heat source/fire FASTER than, it can radiate the heat energy from the heat source/fire. Pentafluoroethane
(HFC-125) AND... Haloalkanes are used to make different organic compounds...
FOR EXAMPLE: 2-bromopropane is converted into propan-2-ol 2-bromopropane Sodium hydroxide Propan-2-ol Sodium Bromide