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Published byGeoffrey Hicks Modified over 6 years ago
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LO: I understand how alkenes react with hydrogen.
5.2 Alkene Reactions 5.2.1 Reaction with Hydrogen LO: I understand how alkenes react with hydrogen.
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All alkenes contain one carbon to carbon .
double bond reactive The double bond is the part of the alkene molecules. The double bond is known as a group. functional Alkenes undergo reactions. addition is an example of an addition reaction. Hydrogenation LO: I understand how alkenes react with hydrogen.
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Hydrogen adds across the bond.
double 2-methylbut-1-ene 2-methylbutane Hydrogenation requires high temperature, high pressure and a catalyst. nickel LO: I understand how alkenes react with hydrogen.
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5.2.2 Reacting with Halogens
LO: I understand how alkenes react with halogens.
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Alkenes also react with in an addition reaction.
halogens but-1-ene 1,2-dibromobutane The brown bromine colour as the bromine molecules add on to the double bond. disappears LO: I understand how alkenes react with halogens.
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5.2.3 Reacting with Hydrogen Halides
LO: I understand how alkenes react with hydrogen halides.
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Alkenes also react with hydrogen halides.
prop-1-ene 2-iodopropane The adds on to the carbon with least hydrogens attached. halogen LO: I understand how alkenes react with hydrogen halides.
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