Question

In the mixture of sand and salt which component is soluble in water.

Answer 1

Salt is soluble in water whereas sand is insoluble in water.

Separate a Mixture of Salt and Sand: This difference in the solubility of salt and sand in water is used to separate them.

This is done as follows.

• The mixture of salt and sand is taken into a beaker and water is added to it. The mixture is stirred to dissolve the sugar. The sand remains undissolved.
• The salt solution containing sand is filtered by pouring over a filter paper kept in a funnel.
• Sand remains as a residue on the filter paper and salt solution is obtained as a filtrate in the beaker kept below the funnel.
• The salt solution is evaporated carefully to get the crystals of salt.

In this way, a mixture of sugar and sand has been separated by using water as the solvent.