Question

how do you seperate the mixture of napthalene powderand salt powder experimentally​

Answer 1

Answer:

sublimation

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Answer 2

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Step 1: Sublimation

• You can separate the sublimating substance (Naphthalene / Anthracene / Camphor / Ammonium chloride) from the mixture through the process of sublimation.
• To start sublimation, click on the ‘Start Sublimation’ button.
• To heat the mixture in the china dish, drag the china dish over the Bunsen burner.
• Drag the glass funnel over the china dish and cover it, to collect the fumes of the sublimating substance.
• You can go to the next process by clicking on the ‘Next’ button.
• Drag the spatula into the finnel to collect the sublimed substance sticking inside it.
• Once collected, drag the spatula back to put the substance in the watch glass.

Step 2: Filtration

• You can separate soil / sand from the mixture through the process of filtration.
• Drag the china dish towards the beaker containing water to transfer the mixture into it.
• Click on the glass rod to stir the contents in the beaker.
• To filter the contents in the beaker, drag it towards the funnel.
• You can go to the next process by clicking on the ‘Next’ button.
• To collect the soil / sand from the funnel, drag the spatula towards it.
• Once collected, drag the spatula back to put the substance in the watch glass.

Step 3: Evaporation

• You can separate sugar / salt from the mixture through the process of evaporation.
• Drag the beaker towards the china dish to pour the contents of the beaker into the china dish.
• Wait for sometime until the water evaporates.
• Drag the spatula towards the china dish to collect the sugar / salt from the china dish.
• Once collected, drag the spatula back to put the substance in the watch glass.

Precautions:

• Always heat china dish on a wire gauze.
• Plue the opening of the stem of the funnel with cotton while heating substances which sublimate.
• Always separate sublimate from the mixture first or before dissolving salt in water.
• While filtering a solution drop the contents along a glass rod into the funnel.