DF - Alkenes Flashcards
Suggest a type of reactant that could be used to remove the HCl
A base
Describe 2 ways chemists can reduce the environmental damage of disposing of polymers
- Develop compostable polymers
- Develop techniques for cracking polymers
Draw 2 repeat units of the polymer CH2CHF
Outline two ways that waste polymers are processed usefully
- Combustion for energy generation
- Used for cracking
Suggest a suitable catalyst for forming an alcohol by hydrating an alkene
Phosphoric acid
Electrophilic addition mechanism
How does the structure of trans-hexene differ from that of cis-hexene?
Hs are diagonal to each other in the trans
Explain why both cis and trans hexene react with Br2 to produce the same structural isomer
Because C=C prevents rotation
Suggest suitable reagents and conditions for the reaction of cylohexene -> cyclohexane
Reagents = H2
Conditions = Ni catalyst
Outline how alkenes are used in the manufacturing of margarine
- Ni catalyst
- Hydrogen
- Unsaturated veg fat
Outline how alkenes are used in the production of polymers
- Ziegler catalyst
Suggest two difficulties in the disposal of polymers
- Non biodegradable
- Burning produces toxic fumes
Suggest a catalyst for isoprene and limonene to react with hydrogen
Nickel
What is meant by the term electrophile
A lone pair of electrons acceptor
Identify a problem of disposing of a polymer which contains chlorine
Chlorinated organic compounds could be produced when burnt
Explain, with the aid of a sketch, how p-orbitals are involved in the formation of the c=c double bond
