ALKENES Flashcards
What is a homologous series
Organic compounds with the same functional group
What is a functional group
Reactive part of an organic molecule: Alkenes: C=C bonds makes them more reactive than an alkane
General formula for alkanes and alkenes
Alkane: CnH2n+2
Alkene: CnH2n
N= no. of carbons
What does combustion produce
Carbon dioxide and water
Why does the combustion of alkenes produce a sootier flame than an alkane
Incomplete combustion producing carbon particulates
Conditions for hydrogenation
Nickel catalyst, 150*C
Conditions for hydration
Phosphoric acid catalyst, Steam 300*C
Testing alkanes and alkenes with bromine water
Alkanes: stay orange-brown
Alkenes: orange brown to colourless (not Clear)
What is hydrogenation?
Saturating the alkene, converting double bonds into single bonds
What is combustion? (Of an alkene)
A chemical reaction where the alkene reacts with oxygen to produce CO2 and H2O and energy
What is hydration? (Of an alkene)
A chemical reaction where water is added to an alkene to form an alcohol, breaks down the double c bond, adds an -OH group to one carbon and a hydrogen atom to the other
What’s a haloalkane
A haloalkane is an organic compound where one or more hydrogen atoms in an alkane are replaced by a halogen atom (fluorine, chlorine, bromine, or iodine).
