1.

A compound with molecular mass 180 is acylated with CH_3COCl to get a compound with molecular mass 390. The number of amino groups present per molecule of the former compound is :

Answer»

2
5
4
6

Solution :`R* ubrace(NH_2)_"Mol.Mass . 16" * CH_3 * oversetOoverset"||"C*Cl* *underset(HCl)* * ubrace(R * NH* oversetOoverset"||"C.CH_3)_"Mol mass . 58"`
Now since the molecular mass increases by 42 unit as a result of the reaction of ONE MOLE of `CH_3COCl` with one- `NH_2` GROUP and the given increase in mass is 210. Hence the number of-`NH_2`groups is= 210/42 = 5.


Discussion

No Comment Found

Related InterviewSolutions