C14

• What is stereoismomerism


  Stereoisomers have the same structural formula but different spacial arrangement of atoms
• Why do alkenes exhibit stereoisomerismh

  Alkenes exhibit E-Z isomerism as are restricted in rotaion aboout C=C bond
• Why do alkenes undergo electrophilic addition

  Double bonds in alkenes are areas with high electron density. This attracts electrophiles (an electron pair acceptor) and the alkenes then undergo addition reactions.
• What are the conditions and changed in functional group for the reaction of bromine with alkenes

  Alkenes turn into dihalogenalkanes at room temperature NOT in UV
• What is the electrophilic addition mechanism of the reaction of bromine and alkenes

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• What are the conditions and change in the functional group of the reaction of hydrogen bromide with alkenes

  Alkenes turn into halogenalkanes at room temperature.
• What is the mechanism of electrophilic addition of hydrogen bromide with alkenes

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• How can hydrogen bromides reaction with alkenes result in two different products

  If alkene is unsymmetrical. The major product will be formed via the most stable carbocation intermediate which is the one bonded to the most alkyl groups according to Markonikovs rule. So tertiary alkenes are the most stable
• What are the conditions required and change in functional group for the reaction of sulfuric acid with alkenes

  (1) Alkenes turn into an alkyl hydrogensulfate in stage one via the concentrated sulfuric acid, at room temperature (2)The alkyl hydrogen sulfate turns into an alcohol in stage two via the water in a warm mixture
• What is the (1) step in the electrophilic addition mechanism of sulfuric acid with alkenes


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• What is the (2) step for the electrophilic addition mechanism of sulfuric acid with alkenes


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• What are the conditions of the dehydration of alkenes and what is the change in functional group

  High temperature of 300-600c , high pressure of 70atm and conc H3PO4 . When water is added to the molecule , alkenes turn into alcohols.
• How are addition polymers formed

  Produced from alkenes where the double bond is broken to form a repeating unit
• What do high pressure and temperature conditions do to the properties of plastics

  Makes branched chains with weak intermolecular forces
• What do Low pressure and temperatures do for the properties of plastics


  Make straight chains with strong intermolecular forces