A) \[\underset{COO{{C}_{2}}{{H}_{5}}}{\overset{COO{{C}_{2}}{{H}_{5}}}{\mathop{|}}}\,\]
B) \[{{C}_{6}}{{H}_{5}}S{{O}_{2}}Cl\]
C) \[{{C}_{6}}{{H}_{5}}S{{O}_{2}}N{{H}_{2}}\]
D) \[C{{H}_{3}}COC{{H}_{2}}COO{{C}_{2}}{{H}_{5}}\]
Correct Answer: B
Solution :
Hinsbergs reagent is used to for both separating and distinguishing between p, s and famines. Hinsbergs reagent is benzene sulphonyl chloride \[({{C}_{6}}{{H}_{5}}S{{O}_{2}}Cl)\]. Amine \[+{{C}_{6}}{{H}_{5}}S{{O}_{2}}Cl+(aq)KOH\to \] ? Clear solution with aqueous \[KOH\] which on addification give insoluble material p-amine. ? Precipitate which is insoluble in \[KOH\]- s-amine-, ? No reaction = famine
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