In benzene sulphonic acid the sulphonic group is attached with benzene ring through ___________________?
Correct answer: C. Sulphur
- A. Hydrogen
- B. Oxygen
- C. Sulphur
- D. OH
Explanation
Benzene sulphonic acid has the structure C6H5SO3H, so the benzene carbon is directly bonded to the sulphur atom of the sulphonic group. The oxygen atoms are bonded to sulphur, not inserted between the ring and sulphur. The likely mistake is oxygen, caused by confusing the S-O bonds within the sulphonic group with the ring-to-group bond.
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About Functional Groups
Functional groups are specific atoms or atom groups that determine the characteristic reactions and properties of organic compounds. Coverage includes alkenes, alkynes, halo, hydroxyl, ether, carbonyl, carboxyl, ester, amino and nitro groups, together with their structures, nomenclature and related homologous series.
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