Chemistry Quiz: Benzene Sulphonic Acid

What is the suffix used for naming aromatic sulphonic acids?

• -halide

• -onium

• -carboxylicacid

• -sulphonicacid

Which group takes preference over all groups except onium and carboxylic acid in the nomenclature of aromatic sulphonic acids?

• Carboxylic acid

• Sulphonic acid

• Halide

• Onium

What is the product obtained when excess chlorosulphonic acid is used in the sulphonation reaction?

• Sulphonamide

• Sulphonyl chloride

• Sulphonic acid

• Sulphonate

What are the physical properties of sulphonic acids?

• Non-polar compounds

• Highly polar compounds

• Insoluble in water

• Low acidity

What makes sulphonic acids highly acidic organic compounds?

• Inductive effect

• Electron donation

• Both resonance and inductive effect

• Resonance

What is the role of the sulphonate anion in stabilizing the acidity of sulphonic acids?

• Inductive effect

• Electron donation

• Electron withdrawal

• Resonance

What is the purpose of desulphonation reaction in the preparation of certain compounds?

• To increase acidity

• To direct meta substitution

• To reduce reactivity

• To enhance solubility

Which group can replace the sulphogroup in the preparation of picric acid?

• All of the above

• Nucleophilic reagents

• Halogen group

• Nitro group

What type of reactions are sulphonic acids not active enough to undergo?

• Acid-base reactions

• Nucleophilic substitution

• Oxidation reactions

• Friedel-Crafts alkylation

What do sulphonic acids form that are analogous to carboxylic acids?

• Both A and B

• Sulphonyl chlorides

• Sulphonic acid esters

• None of the above