Question

Calculate the amount of Salt is needed
to dissolve in 100 g water to form 20% Concentrated Solution.​

Answer 1

Answer:

A solution is said to be saturated if it has with the maximum possible amount of solute that it can dissolve whereas a solution is said to be unsaturated if a solution contains less than the maximum amount of solute. 

Thus, to test if a solution is saturated or not, we need to add sodium chloride, if it dissolves then it is not saturated and if it does not dissolve then its unsaturated.

Answer 2

Answer:

required to prepare 20%solution in 100g of water. ... Thus, 25g of sodium sulphate is required.