Analytical Chemistry Question 213
Question: 0.59 g of an organic substance when treated with caustic soda evolved ammonia which required 20 cc of N/2 sulphuric acid for neutralisation. The percentage of nitrogen is
Options:
A) 26.32%
B) 40%
C) 53.6%
D) 63.6%
Show Answer
Answer:
Correct Answer: A
Solution:
[a] Percentage of nitrogen by Kjeldahl’s method $ =\frac{1.4\times N\times V}{Wt.oforganiccompound} $
$ =\frac{1.4\times 20}{0.532}\times \frac{1}{2}=26.32% $ %
BETA
