GENERAL ORGANIC CHEMISTRY
25277
In Kjeldahl's method for the estimation of nitrogen, the formula used is
1 \(\% N = \frac{{1.4\,{\rm{ }}V{\rm{ }}W}}{N}\)
2 \(\% N = \frac{{1.4\,{\rm{ }}N{\rm{ }}W}}{V}\)
3 \(\% N = \frac{{V{\rm{ }}N{\rm{ }}W}}{{1.8}}\)
4 \(\% N = \frac{{1.4{\rm{ }}V{\rm{ }}N}}{W}\)
Explanation:
(d) \(\%\) of \(N = \frac{{1.4 \times V \times N}}{W}\)
where \(V\) = Volume of acid used
\(N\) = Normality of acid, \(W\) = Weight of substance