1.

A compound with molecular mass 180 is acylated with CH_(3)COCl 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 :By reaction with one mole of `CH_(3)-OVERSET(O)overset(||)(C)-Cl` with one `-NH_(2)` group the MOLECULAR mass increases with 42 unit. SINCE the mass increases by `(190-180)=210`, hence the no. of `NH_(2)` groups are 5.


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