Why sodium extract is prepared for the test of element?

In order to detect them, the elements need to be converted into their ionic forms. This is done by fusing the organic compound with sodium metal. The ionic compounds formed during the fusion are extracted in aqueous solution and can be detected by simple chemical tests.

What is the purpose of preparation of derivative?

The compound is identified by cross reference of its melting or boiling point with the melting point of one of its derivatives. When preparing a derivative, it is necessary that the product be obtained in a pure form, thus ensuring an accurate melting point.

What is the preparation of sodium extract?

By lab procedure: 1-Take a small piece of dry sodium in a fusion tube. 2-Heat the tube slightly on a Bunsen 3-burner so that the sodium melts to a shining globule. 4-Add a pinch of the organic compound. 5-Heat it slowly to start with so that the compound reacts with sodium metal.

What is the purpose of making derivatives of unknown compounds?

The formation of derivatives from unknown compounds is used primarily for identification purposes.

What is the significance of derivative?

The derivative is a financial instrument which derives its value from the underlying asset. The underlying asset can be equity, commodity, currency, bonds, or security. Derivatives are mostly used for hedging the risk which is associated with owning the underlying asset.

What is sodium extract?

It is a general test for the detection of halogens, nitrogen and sulphur in an organic compound. The ionic compounds formed during the fusion are extracted in aqueous solution and can be detected by simple chemical tests. The extract is called sodium fusion extract or Lassaigne’s extract.

Why sodium metal is used in Lassaigne test?

Note: Sodium is used in Lassaigne’s test because of electropositive nature and in order to convert covalent form to ionic form. It is quite reactive in nature.

Why do we prepare derivatives?

In chemistry, a derivative is a compound that is derived from a similar compound by a chemical reaction. Chemical derivatives may be used to facilitate analysis. For example, melting point (MP) analysis can assist in identification of many organic compounds.

Why do we prepare sodium extract from organic compounds?

Smart move. We prepare sodium extract because the elements in the organic compounds are in the covalent form in which they cannot be detected but when the organic compound is fused with sodium metal, sodium salt are formed in which organic compound converted into ionic salt and hence elements can be easily detected. Ahh!!

Why is sodium extract alkaline in nature?

It is because in fusing the organic compounds with free sodium, some of the unreacted sodium react with distilled water, which is used to make the extract. Na + H2O—— NaOH +H2. Due to the formation of sodium hydroxide, the sodium extract becomes alkaline in nature. Why is sodium used in element detection tests?

How is soda extract prepared from sodium carbonate mixture?

Sodium carbonate extract aka Soda extract is prepared during qualitative analysis of anions present in the given salt mixture. Generally if the given compound is insoluble in water we prepare soda extract.

Why do we use soda extract to extract anions from compounds?

Generally if the given compound is insoluble in water we prepare soda extract. Soda extract gives an expedient way of bringing all the anions of the sample into solution. Otherwise they might be insoluble and couldn’t carry out the experiment properly.