write the separation techniques used in separation of following
1) Mercury and water
2) Ethyl alcohol and water
3) water and common salt
4) Saw dust and water
Answers
Explanation:
Mercury and water are separated by decantation by usingseparating funnel as the separation of two immiscible liquids by a separating funnel depends on the difference in their densities. Mercury is heavier than water therefore, forms the lower layer and separated from the upper layer.
Fractional distillation is a methodfor separating a liquid from a mixture of two or more liquids. For example, liquid ethanol can beseparated from a mixture ofethanol and water by fractional distillation. This method works because the liquids in the mixture have different boiling points.
Evaporation process is used to separatecommon salt from water. Waterevaporates and common saltremains as residue
Simple distillation is a method forseparating the solvent from a solution. For example, water can beseparated from salt solution by simple distillation. This methodworks because water has a much lower boiling point than salt. When the solution is heated, the waterevaporates.
Answer:
Explanation:1) Mercury and water are separated by decantation by using separating funnel as the separation of two immiscible liquids by a separating funnel depends on the difference in their densities. Mercury is heavier than water therefore, forms the lower layer and separated from water.
2) liquid ethanol can be separated from a mixture of ethanol and water by fractional distillation. This method works because the liquids in the mixture have different boiling points. When the mixture is heated, one liquid evaporates before the other.
3) Water and salt can be separated by evaporation (boiling). The water gets to it boiling point it start evaporating (liquid-gasous state) And the salt is left over.
4) saw dust and water can separated using magnetic separation. As saw dust is magnetic it will attract to the magnet and water is non magnetic so it will not attract hence both the substances are separate.
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