What is the formula for calculating the perce | vedclass

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Question

(A) In the Dumas method,the organic compound is heated with copper oxide $(CuO)$ to produce nitrogen gas. The volume of nitrogen gas collected is meas

Vedclass · Accepted Answer

$\frac{28 	imes V 	imes 100}{22400 	imes m}$

Vedclass · Answer

(A) In the Dumas method,the organic compound is heated with copper oxide $(CuO)$ to produce nitrogen gas. The volume of nitrogen gas collected is measured at standard temperature and pressure $(STP)$. The percentage of nitrogen is calculated using the formula: $	ext{Percentage of } N = \frac{28}{22400} 	imes \frac{V}{m} 	imes 100$,where $V$ is the volume of $N_2$ gas in $mL$ at $STP$ and $m$ is the mass of the organic compound in grams. Since the molar mass of $N_2$ is $28 \, g/mol$ and $1 \, mole$ of gas occupies $22400 \, mL$ at $STP$,the correct formula is $\frac{28 	imes V 	imes 100}{22400 	imes m}$.

Column-$I$	Column-$II$
$(i)$. Estimation of carbon and hydrogen	$(p)$. $AgX$
$(ii)$. Estimation of nitrogen	$(q)$. $CO_2$ and $H_2O$
$(iii)$. Estimation of halogen	$(r)$. $N_2$
$(iv)$. Estimation of sulphur	$(s)$. $Mg_2P_2O_7$
$(v)$. Estimation of phosphorus	$(t)$. $BaSO_4$

What is the formula for calculating the percentage of nitrogen in the Dumas method?

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