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- 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 :
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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 :
Option: 1
6
Option: 2
2
Option: 3
5
Option: 4
4
Answers (1)
Since,each-COCH3 group displaces one H atom in the reaction of one mole of the group, the molecular mass increases with 42 units.
Since, the mass increases by (390-180)=210, hence the number of NH2 the group is 210/42 = 5.
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