In Dumas' method 292 mg of an organic compound released 50 mL of nitrogen gas $\left(\mathrm{N}_2\right)$ at 300 K temperature and 715 mm Hg pressure. The percentage composition of ' N ' in the organic compound is ________ % (Nearest integer)
(Aqueous tension at $300 \mathrm{~K}=15 \mathrm{~mm} \mathrm{Hg}$ )

Question

In Dumas' method 292 mg of an organic compound released 50 mL of nitrogen gas

\left(\mathrm{N}_2\right)

at 300 K temperature and 715 mm Hg pressure. The percentage composition of ' N ' in the organic compound is ________ % (Nearest integer)
(Aqueous tension at

300 \mathrm{~K}=15 \mathrm{~mm} \mathrm{Hg}

)

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aligned & n_ N_2 = P_ N_2 · V RT & n_ N_2 =(700)/(760) × (50)/(1000) × (1)/(0.0821 × 300) & n_ N =2 × n_ N_2 & Mass of N=2 × n_ N × 14 & \% N= mass of N mass of organic compound × 100 & \% N=(700)/(760) × (50)/(1000) × (2 × 14)/(0.0821 × 300) × (1000)/(292) × 100 & \% N=18 \% aligned

In Dumas' method 292 mg of an organic compound released 50 mL of...

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