In Sulfonating, which acid group is used?(a) -OH(b) -SO-OH(c) -SO2-OH(d) -SO3-OHI have been asked this question in class test.My doubt stems from Sulphonation and Sulfides in section Sulfonation and Sulfation of Unit Processes

In Sulfonating, which acid group is used?(a) -OH(b) -SO-OH(c) -SO2-OH(

1.	In Sulfonating, which acid group is used?(a) -OH(b) -SO-OH(c) -SO2-OH(d) -SO3-OHI have been asked this question in class test.My doubt stems from Sulphonation and Sulfides in section Sulfonation and Sulfation of Unit Processes
Answer» The correct answer is (c) -SO2-OH To ELABORATE: Sulfonating may be defined as any chemical PROCESS by which the sulfonic acid GROUP -S020H, or the CORRESPONDING salt or sulfonyl halide group (e.g., -S02Cl), is INTRODUCED into an organic compound.

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