A student has been given a compound " x " of molecular formula- C _ 6 H _ 7 ~N . ' x ' is sparingly soluble in water. However, on addition of dilute mineral acid, ' x ' becomes soluble in water. ' x ' when treated with CHCl _ 3 and KOH ( alc ), ' y ' is produced. ' y ' has a specific unpleasant smell. On treatment with benzenesulphonyl chloride, ' x ' gives a compound ' z ' which is soluble in alkali. The number of different " H " atoms present in ' z ' is:-
D. 7
Compound X has molecular formula C_6H_7N, is sparingly soluble in water but soluble in dilute mineral acid → primary aromatic amine (aniline). X with CHCl _3 + KOH (alc.) gives Y with unpleasant smell → carbylamine reaction, confirms primary amine. X with benzenesulphonyl chloride gives Z which is soluble in alkali → Hinsberg test confirms primary amine. Z is N-phenylbenzenesulfonamide. Structure of Z: C _6 H _5 -NH-SO _2 -C _6 H _5
Related: Chemistry — Amines · All PYQ Banks