5. What is crystallisation? Name any three substances which can be purified using this technique.
Answers
Answer:
Answer: Crystallisation is a chemical process used to obtain pure copper sulphate from the impure solution. Potash alum, tetraamine copper sulphate, baking soda are the three substances that can be purified using crystallization.
Answer:
We can separate sugar from a sugar solution.Some amount of sugar solution is taken in a beaker and boiled for sometimes.As a result some water will vaporize and the solution will become more concentrated.If this concentrated solution is allowed to cool down undisturbed, solid sugar particles are separated out from the solution.This process is known as crystallization.
The three substances which can be purified by using crystallization are :
(1) Separation of sugar from a sugar solution.
(2) Separation of mud from muddy water
(3)Separation of salt from salty water.