Question

Assertion: A saturated solution is not necessarily concentrated.
Reason: Dilute and concentrated are terms that relate only to the relative amount of solute dissolved in the solvent.
A.Both assertion and reason are correct and reason is correct explanation of assertion
B.Both assertion and reason are correct and reason is not the correct explanation of assertion.
C.Assertion is correct but reason is not.
D.Assertion is not correct but reason is correct.
E.Both assertion and reason are not correct.

Answer 1

Hint: Saturated solution is formed by sparingly soluble salts. Concentration of solvent is relatively larger; hence all these terms are related to the amount of solute only.

Complete step by step answer:
Let us look at assertion and reasoning statements:
Assertion: A saturated solution is not necessarily concentrated. A saturated solution is formed by sparingly soluble salts. Sparingly soluble salts are those salts in which are not completely dissolved in water. A small amount of these salts get dissolved. The solubility of these sparingly soluble salts totally depends on their solubility constant. Saturated solutions are those solutions in which the maximum amount of solute has been dissolved, which depend on the nature of solute. It does not mean that the solution should be concentrated. A pinch of sparingly soluble salt can even make a solution saturated but we know it does not make the solution concentrated. Hence the given assertion is correct.
Now coming to reasoning statement:
Since the solvent is in bulk, the concentration terms are always defined on the basis of amount of solute. If any solution has less amount of solute than it is termed as dilute solution and the other one having higher concentration of solute is termed as concentrated solution. Amount of solvent does not matter because we always calculate per unit concentration by dividing the amount of solvent.
Hence both the statement stands correct and the statement 2 is the correct explanation of statement 1.

Hence option A is correct.

Note:
Dilute and concentrated solutions are relative terms. One solution can be concentrated or dilute at the same time, it will depend upon to whom we are comparing. For example 5 molar salt solution is more concentrated compared to 2 molar solution, but it is diluted as compared to 7 molar solution.