In an organic compound of molar mass gre...

In an organic compound of molar mass greater than `100` containing only `C`, `H` and `N`, the percentage of `C` is `6` times the percentage of `H` while the sum of the percentage of `C` and H is `1.5` times the percentage of `N`. What is the least molar mass :

175

140

105

210

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The correct Answer is:

Mass ratio of `C: H : N = 18: 3 :14`
Empirical formula `=C_(3)H_(6)N(2)` E.f. Wt `=70`

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