OCR Organic Chemistry AS Module 4

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  • Created by: Rosie CC
  • Created on: 22-03-17 13:22
What conditions are needed for free radical substitution?
UV Light
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Alkanes + Halogens -> ?
Haloalkanes
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Alkenes + Halogens -> ? (in organic solvent)
Dihaloalkanes
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Alkanes + Halogens is an example of what kind of reaction?
Free Radical Subsitution
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Alkenes + Halogens is an example of what kind of reaction?
Electrophilic addition
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Dehydrating an alcohol requires what conditions?
Strong acid catalyst and heat
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Alcohol (dehydration) -> ?
Alkene
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Dehydration of an alcohol is what type of reaction?
Elimination
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Dehydration of an alcohol is what type of reaction?
Elimination [the water has been eliminated]
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Haloalkane (hydrolysed) -> ?
alcohol
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Hydrolysing a haloalkane is what kind of reaction?
Nucleophilic substitution
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What does a curly arrow in a reaction demonstrate?
The movement of electrons
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Alkene + Hydrogen -> ?
Alkane
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What are the conditions for Alkene + Hydrogen?
Nickel catalyst and 150 degrees celcius
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Alkene + Hydrogen Halide -> ?
Haloalkane
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Alkene + Halogen -> ? (in aqueous solvent?
Haloalcohol
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Alkene + Water -> ?
Alcohol
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What are the conditions for alkene + Water?
conc. H3PO4 catalyst and 300 degrees celcius
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Which is more stable: a carbon atom bonded with two carbon atoms/ one carbon atom?
Carbon bonded with two other carbon atoms is more stable.
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What is the definition of an electrophile?
An electron pair acceptor
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What is the definition of a nucleophile?
An electron pair donator
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What is the difference between a radical and an ion?
A radical has the same ratio of protons:electrons so isn't charged.
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What is a structural isomer?
compounds with the same molecular formula but different structural formula
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What is a stereoisomer?
Compounds with the same molecular and structural formula but a different arrangement in space?
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What is a pi bond?
Overlapping p orbitals
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What are some properties of pi bonds?
Cannot rotate and weak
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What is a sigma bond?
Overlapping s orbitals
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Why aren't alkanes very reactive?
High bond enthalpy and low polarity of sigma bonds (alkanes don't have pi bonds)
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a-b (heterolytic fission) -> ?
a* + b*
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a-b (homolytic fission) -> ?
a+ (positive ion) + **b- (Negative ion)
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What does the term saturated mean?
No double bonds
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What are the products when alkanes undergo complete combustion?
CO2 and H2O
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What is the bond angle around the C=C in an alkene?
120 degrees celcius
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How does the CIP priority rule work in E/Z stereoisomers?
The group with the highest molar mass is the priority
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What is the process that turns an alkene into a polymer?
Addition polymerisation
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Product when a primary alcohol is oxidised and filtered off?
Aldehyde
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Oxidising agent used?
Oxidising agent = potassium dichromate (K2Cr2O7)
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Product when a primary alcohol is oxidised and refluxed?
Carboxylic acid
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Product when a secondary alcohol is oxidised and refluxed?
Ketone
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Product when a tertiary alcohol is oxidised?
Nothing - it cannot be oxidised
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Dehydration of an alcohol requires what conditions?
170 degrees celcius, under reflux, with conc. sulfuric/phosphoric acid
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Chlorine + ozone -> ? (with UV light)
Oxygen
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Other cards in this set

Card 2

Front

Haloalkanes

Back

Alkanes + Halogens -> ?

Card 3

Front

Dihaloalkanes

Back

Preview of the back of card 3

Card 4

Front

Free Radical Subsitution

Back

Preview of the back of card 4

Card 5

Front

Electrophilic addition

Back

Preview of the back of card 5
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Comments

leahgolding

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Really useful, thank you

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