Suggest a suitable technique to separate the
constituents of the following mixtures. Also give
the reason for selecting the particular method.
(a) Salt from sea water
(b) Ammonium chloride from sand
(c) Chalk powder from water
(d) Iron from sulphur
(e) Water and alcohol
f) Sodium chloride and potassium nitrate
(8) Calcium carbonate and sodium chloride
please answer this question......
Answers
Answer:
Salt from Sea water
Explanation:
Because we need to seperate sand and water
Explanation:
(a) The technique used to separate the salt from seawater is Evaporation.
Reason - Because this method is used to separate the components of the homogeneous solid-liquid mixture. In this method sea water is collected in a shallow bed and allowed to evaporate in the sun. When all the water is evaporated, salt is left behind. By this method, we only get solid and liquid is evaporated In Its vapour form.
(b) Technique used to separate Ammonium chloride from sand is sublimation. Because this method is used for solid mixtures in which one of the components can sublime on heating. In this method. Ammonium chloride changes into vapours on heating and salt is left behind.
(c) Technique used to separate chalk powder from water is filtration.
Reason - Because this process is used to separate the components of a heterogeneous solid-liquid mixture. In which solids are lights and insoluble In liquids. Substances used as filters are sand filter paper at C. These filters allows the liquid to pass through them but not solids.
(d) Technique to separate iron from sulphur is magnetic separation. Because. this method is used when one of the component of mixture is iron. Iron gets attracted towards the magnet and hence get separated.
(e) Technique used to separate water and alcohol is Fractional Distillation. Because in this method, the vapours of water is left behind In the original vessel as the alcohol boils at lower temperature than water. Thus these two liquids can be separated.
(f) Technique used is Fractional-crystallisation. Because this method is used when solubility of solid components of mixture and different in the same solvent. Here, sodium chloride and potassium nitrate both are soluble in water but solubility of potassium nitrate is more.
(g) Technique used Is Solvent Extraction Method. Because, by this method salts get dissolve in water while calcium carbonate being insoluble in water settles down in the container. And hence get separated about.
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