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Aromatics (P2+P3)

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Total cards: 9•Content version: v4•Public deck•Updated: 8/1/2026

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#1
Front (Question)

Describe the shape of Benzene

Back (Answer)

Planar hexagonal - bond angle = 120 bond lengths are equal

#2
Front (Question)

Describe the bonding in Benzene

Back (Answer)

each carbon bonded to 3 other atoms by covalent bonds spare electrons in P orbitals overlap to form Pi bond delocalisation of electrons

#3
Front (Question)

Describe the stability of Benzene

Back (Answer)

delta H hydrogenation for cyclohexatriene is -360 delta H hydrogenation for benzene is 152 less exothermic than expected benzene is more stable (less reactive)

#4
Front (Question)

Name the mechanism, reagents and conditions for the nitration of benzene

Back (Answer)

Electrophilic substitution reagents and conditions; conc H2SO4 and HNO3

#5
Front (Question)

Equation for the NO2+ electrophile being formed for the nitration of benzene?

Back (Answer)

H2SO4 + HNO3 –> HSO4- + H2O + NO2+

#6
Front (Question)

Name the mechanism, reagents and conditions for the acylation of benzene

Back (Answer)

Electrophilic substitution reagents and conditions; acyl chloride and AlCl3 catalyst

#7
Front (Question)

Equation for the RCO+ electrophile being formed for the acylation of benzene?

Back (Answer)

RCOCl + AlCl3 –> RCO+ + AlCl4-

#8
Front (Question)

Equation for the reformation of the catalyst for nitration of benzene

Back (Answer)

H+ + HSO4- –> H2SO4

#9
Front (Question)

Equation for the reformation of the catalyst for the acylation of benzene

Back (Answer)

AlCl4- + H+ –> HCl + AlCl3