Which separation techniques will you apply for the separation of the following? (a) Sodium chloride from its solution in water. (b) Ammonium chloride from a mixture containing sodium chloride and ammonium chloride. (c) Small pieces of metal in the engine oil of a car. (d) Different pigments from an extract of flower petals. (e) Butter from curd. (f) Oil from water. (g) Tea leaves from tea. (h) Iron pins from sand. (i) Wheat grains from husk. (j) Fine mud particles suspended in water.
Answers
Answer:
Butter from curd. (f) Oil from water. (g) Tea leaves from tea. (h) Iron pins from sand. (i) Wheat grains from husk. (j) Fine mud particles suspended in water.
Explanation:
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(1) The evaporation method will isolate the sodium chloride from its solution in water. During the process, water evaporates, leaving behind the sodium chloride in the container.
(2) By sublimation process, ammonium chloride can be obtained as sublime from the mixture, containing sodium chloride and ammonium chloride.
Crystallization is a good method to separate sodium chloride from water. This method makes sure impurities are removed by filtration and only the pure salt crystallizes out when the mixture is heated and cooled.