Advertisements
Advertisements
Question
Match Column I with Column II.
| Column I | Column II |
| (i) Dumas method | (a) AgNO3 |
| (ii) Kjeldahl’s method | (b) Silica gel |
| (iii) Carius method | (c) Nitrogen gas |
| (iv) Chromatography | (d) Free radicals |
| (v) Homolysis | (e) Ammonium sulphate |
Solution
| Column I | Column II |
| (i) Dumas method | (c) Nitrogen gas |
| (ii) Kjeldahl’s method | (e) Ammonium sulphate |
| (iii) Carius method | (a) AgNO3 |
| (iv) Chromatography | (b) Silica gel |
| (v) Homolysis | (d) Free radicals |
Explanation:
(i) Used for N containing compounds.
(ii) Nitrogen converts to ammonium sulphate.
(iii) Compound is heated in the presence of AgNO3.
(iv) Adsorbent used is silica gel.
(v) Free radicals are formed by homolytic fission.
APPEARS IN
RELATED QUESTIONS
Differentiate between the principle of estimation of nitrogen in an organic compound by Dumas method.
Differentiate between the principle of estimation of nitrogen in an organic compound by Kjeldahl’s method.
A sample of 0.50 g of an organic compound was treated according to Kjeldahl’s method. The ammonia evolved was absorbed in 50 mL of 0.5 M H2SO4. The residual acid required 60 mL of 0.5 M solution of NaOH for neutralisation. Find the percentage composition of nitrogen in the compound.
In DNA and RNA, nitrogen atom is present in the ring system. Can Kjeldahl method be used for the estimation of nitrogen present in these? Give reasons.
In Duma's method for estimation of nitrogen 0.3 g of an organic compound gave 50 mL of nitrogen collected at 300 K temperature and 715 mm pressure. Calculate the % composition of nitrogen in the compound: (Aqueous tension at 300 k = 15 mm)
Kjeldahl’s method was used for the estimation of nitrogen in an organic compound. The ammonia evolved from 0.55 g of the compound neutralised 12.5 mL of 1 M H2SO4 solution. The percentage of nitrogen in the compound is ______. (Nearest integer)
Kjeldahl's method is used in the estimation of ______.
Kjeldahl's method was used for the estimation of nitrogen in an organic compound. The ammonia evolved from 0.55 g of the compound neutralised 12.5 mL of 1 MH2SO4 solution. The percentage of nitrogen in the compound is ______. (Nearest integer)
A sample of 0.125 g of an organic compound when analyzed by Duma's method yields 22. 78 mL of nitrogen gas collected over KOH solution at 280 K and 759 mm Hg. The perentage of nitrogen in the given organic compound is ______. (Nearest integer)
Given:
- The vapour pressure of water of 280 K is 14.2 mm Hg.
- R = 0.082 L atm K-1 mol-1
The transformation occurring in Duma's method is given below:
\[\ce{C2H7N + (2x + \frac{y}{2}) CuO -> xCO2 + \frac{y}{2} H2O + \frac{z}{2} N2 + (2x + \frac{y}{2}) Cu}\]
The value of y is ______. (Integer answer)
