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an organic compound on analysis was found to conten carbon ,hydrogen and nitrogen in a mass ratio of 18;2;7.If its molecular mass in 108 ,then determine the molecular formula of compound.

an organic compound on analysis was found to conten carbon ,hydrogen and nitrogen in a mass ratio of 18;2;7.If its molecular mass in 108 ,then determine the molecular formula of compound.
 

Grade:12th pass

1 Answers

Akash verma
19 Points
7 years ago
Masses of elements be 18x,2x,7x18x+2x+7x=108 __x=4,masses of elements in comp: C=72;H:8;N:28(in gm)Weight by mass ratio of each:6,8,2 . Emperical ratio- 3:4:1;Emp. Formula: C3H4N;emp. Wt=54gmMol wt./EMP wt=2Therefore formula is: C6H8N2

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