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Aromatic Compounds formulas

Master Aromatic Compounds through 12 JEE Advanced-level formulas, systematically structured with every variable spelled out. Revise concept-wise, identify the areas where you need improvement, and focus your preparation with greater precision.

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Aromatic Compounds, every formula

12 formulas, typeset and free. Print it, or keep it open beside your practice.

Aromaticity (Huckel's rule)
$(4 n + 2) π -electrons, cyclic, planar, conjugated$
Q1MCQAromaticity
For a compound to be aromatic (Hückel), it needs:
- A
  $(4n+2)$ $\pi$-electrons, planar, cyclic
- B
  $4n$ $\pi$-electrons
- C
  any number
- D
  no conjugation
Benzene structure
$resonance hybrid, s p^{2}$
Q1MCQBenzene
The carbon atoms in benzene are:
- A
  $sp^{2}$-hybridised
- B
  $sp^{3}$
- C
  $sp$
- D
  $sp^{3}d$
Electrophilic aromatic substitution
$characteristic reaction of benzene$
Q1MCQEAS
The characteristic reaction of benzene is:
- A
  electrophilic aromatic substitution
- B
  nucleophilic addition
- C
  free-radical addition
- D
  elimination
Nitration
$benzene + H N O_{3} / H_{2} S O_{4} \to nitrobenzene$
Q1MCQNitration
Nitration of benzene gives:
- A
  nitrobenzene
- B
  aniline
- C
  phenol
- D
  toluene
Sulphonation
$benzene + oleum \to benzenesulphonic acid$
Q1MCQSulphonation
Sulphonation of benzene gives:
- A
  benzenesulphonic acid
- B
  nitrobenzene
- C
  chlorobenzene
- D
  phenol
Halogenation
$benzene + X_{2} / FeX_{3}$
Q1MCQHalogenation
Halogenation of benzene requires a catalyst such as:
- A
  $FeX_3$
- B
  $NaOH$
- C
  water
- D
  $KMnO_4$
Friedel–Crafts alkylation
$benzene + R X / A l C l_{3}$
Q1MCQFC alkylation
Friedel–Crafts alkylation uses an alkyl halide and:
- A
  $AlCl_3$
- B
  $NaOH$
- C
  $H_2O$
- D
  $KMnO_4$
Friedel–Crafts acylation
$benzene + R C O C l / A l C l_{3}$
Q1MCQFC acylation
Friedel–Crafts acylation introduces a(n):
- A
  acyl group (-COR)
- B
  $-OH$
- C
  $-NH_2$
- D
  $-NO_2$
o/p-directing groups
$activating: -OH, -NH_{2}, - R$
Q1MCQo/p-directing
Which group is ortho/para-directing and activating?
- A
  $-OH$
- B
  $-NO_2$
- C
  $-COOH$
- D
  $-CHO$
m-directing groups
$deactivating: -NO_{2}, - C O O H, - C H O$
Q1MCQm-directing
Which group is meta-directing and deactivating?
- A
  $-NO_2$
- B
  $-OH$
- C
  $-NH_2$
- D
  $-CH_3$
Resonance energy of benzene
$\approx 150 kJ/mol$
Q1MCQResonance energy
Benzene's stability is explained by its:
- A
  resonance (delocalisation) energy
- B
  ionic bonding
- C
  hydrogen bonding
- D
  metallic bonding
Kekulé structures
$alternating single/double bonds$
Q1MCQKekule
The Kekulé structures of benzene show:
- A
  alternating single and double bonds
- B
  all single bonds
- C
  all triple bonds
- D
  no bonds

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Aromatic Compounds formulas

Aromatic Compounds, every formula

Aromaticity (Huckel's rule)

Benzene structure

Electrophilic aromatic substitution

Nitration

Sulphonation

Halogenation

Friedel–Crafts alkylation

Friedel–Crafts acylation

o/p-directing groups

m-directing groups

Resonance energy of benzene

Kekulé structures

More JEE Advanced Chemistry formula sheets

Other ways to revise this chapter

Preparing students for India’s top institutes

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