How would you seperate the following?
i)alchlol and water
ii. calcium carbonate and calcium chloride
iii. oil and water
iv. carbon KNO3 and sulphur
v. sodium chloride and pottasium nitrate

Asked by rgkgmu | 24th Sep, 2015, 11:14: AM

Expert Answer:

i. Alcohol and water

 Fractional distillation

 

ii. Calcium carbonate and calcium chloride

Calcium chloride is water soluble and calcium carbonate is insoluble.

Calcium carbonate can be separated by filtration and calcium chloride can be later obtained by evaporation.

 

iii. Oil and water

Separating funnel

 

iv. Carbon KNO3 and sulphur

Potassium nitrate is soluble in water, sulphur is soluble in carbon disulphide and carbon is insoluble in both the solvents.

 

v. Sodium chloride and potassium nitrate

 Sodium chloride is completely soluble in cold water at 100C and potassium nitrate is less soluble at 100C. So by lowering the temperature of the solution mixture in the range of 50C - 80C, potassium nitrate will first crystallize out. The potassium nitrate crystals can be separated by filtration. Sodium chloride still soluble in water can be later obtained by the process of evaporation.

 

i.         Alcohol and water

 Fractional distillation

 

ii.       Calcium carbonate and calcium chloride

Calcium chloride is water soluble and calcium carbonate is insoluble.

Calcium carbonate can be separated by filtration and calcium chloride can be later obtained by evaporation.

 

iii.     Oil and water

Separating funnel

 

iv.     Carbon KNO3 and sulphur

Potassium nitrate is soluble in water, sulphur is soluble in carbon disulphide and carbon is insoluble in both the solvents.

 

v.       Sodium chloride and potassium nitrate

 Sodium chloride is completely soluble in cold water at 100C and potassium nitrate is less soluble at 100C. So by lowering the temperature of the solution mixture in the range of 50C - 80C, potassium nitrate will first crystallize out. The potassium nitrate crystals can be separated by filtration. Sodium chloride still soluble in water can be later obtained by the process of evaporation.

Answered by Vaibhav Chavan | 25th Sep, 2015, 10:01: AM

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