Question

Component A dissolves in component B to form a liquid mixture. If this mixture is subjected to a process C, then only component A can be recovered. But if this mixture is subjected to another process D, then both the components A and B can be recovered from their mixture.
a. Name one component which could be like A
b. Give one example of a component like B.
c. Name the process C
d. What could process D be?

Answer 1

Answer:

(A) Salt or sugar (Solute)

(B) Water (Solvent)

(C) Evaporation

(D) Crystallisation and filterization

Explanation:

$\blacksquare$ Component A is the solute and component B is the solvent

$\blacksquare$ Component A can be dissolved in component B to form a liquid mixture or a solution

$\blacksquare$ Component A can be salt or sugar and

$\blacksquare$ Component B can be water

$\blacksquare$ Salt or sugar (A) dissolves in water (B) to form a liquid mixture or solution

$\blacksquare$ Evaporation of a solution will give us the solute back but the solvent evaporates away

$\blacksquare$ Salt or sugar (A) dissolved in water (B) can be subjected to evaporation (C) and water (B) escapes out as water vapour whereas, salt or sugar (A) remains in the container

$\blacksquare$ Excess of solute is added to the solvent until the solution becomes saturated or super-saturated

$\blacksquare$ Then it is cooled down so that pure crystals of the solute is formed

$\blacksquare$ Now this is filterded through a filter paper and the retentiate gives us the solute and

$\blacksquare$ Filtrate gives us the solvent

Answer 2

Answer:

A. salt or sugar

B. water

C. evaporation

D. crystallization or filtration