In Kjeldahl's method for the estimation of nitrogen,the formula used is
- A$\% N = \frac{1.4 \times V \times W}{N}$
- B$\% N = \frac{1.4 \times N \times W}{V}$
- C$\% N = \frac{V \times N \times W}{1.8}$
- D$\% N = \frac{1.4 \times V \times N}{W}$
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In Dumas method for the estimation of $N_2$,the sample is heated with copper oxide and the gas evolved is passed over :
$1.2 \ g$ of an organic compound on Kjeldahlization liberates ammonia which consumes $30 \ cm^3$ of $1 \ N \ HCl$. The percentage of nitrogen in the organic compound is:
MediumKCET 2011
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$A$ student has been given $0.314 \ g$ of an organic compound and asked to estimate Sulphur. During the experiment, the student has obtained $0.4813 \ g$ of barium sulphate. The percentage of sulphur present in the compound is . . . . . .
(Given Molar mass in $g \ mol^{-1}$: $S = 32$, $BaSO_4 = 233$) (in $\%$)
(Given Molar mass in $g \ mol^{-1}$: $S = 32$, $BaSO_4 = 233$) (in $\%$)
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View SolutionIn the Dumas method for the estimation of nitrogen,$0.388 \ g$ of an organic compound yielded $1.31 \ mL$ of $N_2$ gas collected at $293 \ K$ temperature and $746 \ mm$ pressure. Calculate the percentage of nitrogen in the compound. (Aqueous tension at $293 \ K = 6 \ mm$). (in $\%$)
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