Explain the reason for the fusion of an organic compound with metallic sodium for testing nitrogen, sulphur and halogens.

Asked by Abhisek | 1 year ago |  60

##### Solution :-

Nitrogen, sulphur, and halogens are covalently bonded in organic compounds. For their detection, they have to be first converted to ionic form. This is done by fusing the organic compound with sodium metal because sodium is very reactive. This is called “Lassaigne’s test”. The chemical equations involved in the test are

$$Na +C +N\rightarrow NaCN$$

$$Na+ S+ C+ N\rightarrow NaSCN$$

$$2Na+ S\rightarrow Na_2 S$$

$$Na+ X\rightarrow NaX$$

(X= Cl, Br, I)

Carbon, nitrogen, sulphur, and halogen come from organic compounds.

Answered by Pragya Singh | 1 year ago

### Related Questions

#### Which of the following carbocation is most stable?

Which of the following carbocation is most stable?

(a) $$(CH_3)_3 C.C^{+}H_2$$

(b) $$(CH_3)_3\; C^{+}$$

(c) $$CH_3 CH_2C^{+}H_2$$

(d) $$CH_3 C^{+}HCH_2CH_3$$

#### Indicate the σ and π bonds in the molecules: CH3NO2

Indicate the σ and π bonds in the molecules: CH3NO2

#### The reaction: CH_3 CH_2 I+KOH_{(aq)}CH_3 CH_2 OH +KI is classified as : (a) electrophilic substitution

The reaction:

$$CH_3 CH_2 I+KOH_{(aq)} \rightarrow CH_3 CH_2 OH +KI$$ is classified as :

(a) electrophilic substitution

(b) nucleophilic substitution

(c) elimination

#### The best and latest technique for isolation, purification and separation of organic compounds is

The best and latest technique for isolation, purification and separation of organic compounds is:

(a) Crystallisation

(b) Distillation

(c) Sublimation

(d) Chromatography

#### In the Lassaigne’s test for nitrogen in an organic compound, the Prussian blue colour is obtained

In the Lassaigne’s test for nitrogen in an organic compound, the Prussian blue colour is obtained due to the formation of:

(a) $$Na_4[Fe(CN)_6]$$

(b) $$Fe_4[Fe(CN)_6]_3$$

(c) $$Fe_2[Fe(CN)_6]$$

(d) $$Fe_3[Fe(CN)_6]_4$$