B6 Organic Chemistry II

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

Which model of benzene is this

Back (Answer)

Kekulé’s model

Front (Question)

Which model of benzene is this

Back (Answer)

Delocalised model

Front (Question)

Describe the structure and bonding in Kekulé’s model of benzene

Back (Answer)

• P-orbitals overlap to form pi-bonds • Pi-electrons are localised between carbon atoms • Alternating pi-bonds

Front (Question)

What is the similarity between Kekulé’s benzene model and the delocalised benzene model

Back (Answer)

Both have overlap of p-orbitals

Front (Question)

Describe the delocalised model of benzene

Back (Answer)

P-orbitals overlap to form pi-bonds, with pi-electrons delocalised into delocalised ring pi-system

Front (Question)

What is the evidence to suggest that Kekulé’s model of benzene isn’t correct

Back (Answer)

• Carbon-carbon bond lengths are all the same size in benzene, but not in Kekule’s model • Enthalpy of hydrogenation of benzene is less exothermic than Kekule’s model • Benzene is less reactive than alkenes - bromination requires a catalyst for benzene but not for alkenes

Front (Question)

Name this molecule

Back (Answer)

Phenylamine

Front (Question)

Name this molecule

Back (Answer)

Benzonic acid

Front (Question)

Catalyst for benzene electrophillic substitution - nitration

Back (Answer)

Concentrated Sulfuric Acid

#10

Front (Question)

Conditions for benzene electrophillic substitution - nitration, and why

Back (Answer)

Less than 50c to prevent further substitutions occuring

#11

Front (Question)

Inorganic product for benzene electrophillic substitution - nitration

Back (Answer)

Water

#12

Front (Question)

Electrohphile generator step for benzene electrophillic substitution - nitration

Back (Answer)

#13

Front (Question)

Mechanism step for benzene electrophillic substitution - nitration

Back (Answer)

#14

Front (Question)

Catalyst regeneration step for benzene electrophillic substitution - nitration

Back (Answer)

#15

Front (Question)

Catalyst for benzene electrophillic substitution - halogenation

Back (Answer)

Halogen carrier - AlCl3 or FeCl3

#16

Front (Question)

Inorganic product for benzene electrophillic substitution - halogenation

Back (Answer)

Hydrogen halide

#17

Front (Question)

Catalyst generation for benzene electrophillic substitution - halogenation

Back (Answer)

#18

Front (Question)

Mechanism for benzene electrophillic substitution - halogenation

Back (Answer)

#19

Front (Question)

Catalyst regeneration for benzene electrophillic substitution - halogenation

Back (Answer)

#20

Front (Question)

Reactant for Friedel-Crafts alkylation

Back (Answer)

Haloalkane

#21

Front (Question)

Catalyst for Friedel-Crafts alkylation

Back (Answer)

Halogen carrier - AlCl3 or FeCl3

#22

Front (Question)

Inorganic product of Friedel-Crafts alkylation

Back (Answer)

Hydrogen halide

#23

Front (Question)

Reactant of Friedel-Crafts acetylation

Back (Answer)

Acyl chloride

#24

Front (Question)

Catalyst for Friedel-Crafts aceytlation

Back (Answer)

Halogen carrier - AlCl3 or FeCl3