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  4. In Dumas method 0.5 g of an organic compound containing nitrogen gave 112 ml of nitrogen at S.T.P. The percentage of nitrogen in the given compound is:

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Q. In Dumas method $0.5 g$ of an organic compound containing nitrogen gave $112 ml$ of nitrogen at S.T.P. The percentage of nitrogen in the given compound is:

Organic Chemistry – Some Basic Principles and Techniques

Solution:

$\% N =\frac{28}{22400} \times \frac{\text { Vol. of } N _{2} \text { at } STP ( ml )}{\text { wt. of org. comp }} \times 100$