JEE MAIN - Chemistry (2013 (Offline) - No. 3)
A compound with molecular mass 180 is acylated with CH3COCl to get a compound with molecular mass
390. The number of amino groups present per molecule of the former compound is:
2
5
4
6
Giải thích
_en_3_1.png)
Now since the molecular mass increases by $$42$$ unit as a result of the reaction of one mole of $$C{H_3}COCl$$ with one-$$N{H_2}$$ group and the given increase in mass is $$210.$$ hence the number of $$ - N{H_2}$$ group is $$210/42=5$$