Question

how do you prepare lassaigne's filtrate?​

Answer 1

Answer:

Plunge the red hot tube into a china dish containing distilled water. Crush the contents with a glass rod and heat to boiling point. Stop heating and remove the insoluble matter by filtration. The filtrate is called Lassaigne's Extract.

Answer 2

Preparation of Lassaigne's Extract:

A small pellet of metallic sodium together with a little of the substance is heated to red hot in an ignition tube. It is then suddenly plunged into about 10ml of distilled water in a china dish. The mixture is boiled well and filtered.

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