Question

6. A mixture of sodium chloride and ammonium chloride is heated in the set-up shown below After the experiment, ammonium chloride will be obtained in the part labelled as a) The cotton plug b) The funnel and the China dish c) inverted funnel d) China dish ​

Answer 1

Answer:

(c) Inverted funnel

Answer 2

A mixture of sodium chloride and ammonium chloride is heated in the set-up shown below After the experiment, ammonium chloride will be obtained in the part labeled as

(c) INVERTED FUNNEL.

• The experimental setup shown in the figure is for the separation of the mixture of salt NaCl and ammonium chloride NH4Cl.
• The method of separation of the mixture depicted in the figure is called sublimation.
• Sublimation is the process of where a substance is heated and converted directly from a solid-state to its gaseous state, skipping the liquid state.
• In this experiment, sublimation is applied to the mixture of salt NaCl and ammonium chloride NH4Cl for separation.
• Setup for the experiment:

1. A china dish is placed on top of a tripod stand burner on which the mixture of salt NaCl and ammonium chloride NH4Cl is kept.
2. Then, an inverted funnel ( with a cotton plug on the narrower end for closure) is placed on a china dish covering the mixture.
3. Then the burner is switched on for heating the mixture i.e. sublimation.

• After heating at around 300°C to 400°C, the salt NaCl remains on the china dish as a separate part.
• And ammonium chloride NH4Cl is released in gaseous form and finally gets collected in the solid form on cooling on the inner walls of the inverted funnel (inside the inverted funnel).
• This is how the mixture is separated.