Question

14. The quantity remaining constant on dilution is
(1) Number of moles of solute
(2) Molarity of the solution
(3) Mole fraction of solute
(4) Mass of the solution​

Answer 1

(1)number of moles of solute is acorrect ans as quantity of solvent in only changing

Answer 2

Option 1 is the correct answer.

Number of moles of solute

Explanation:

• Dilution is the process when more solvent is added to a solution to lower the solute concentration. In dilution, neither the solute concentration nor the number of moles changes; both is the same before and after dilution.
• By simply mixing in more solvent, dilution is the process of lowering a solute's concentration in a solution. Diluting a solution entails adding more solvent without also adding more solute. The concentration of salt decreases when 1 liter of water is added to this solution.
• A good example of a diluted solution is tap water, which only has trace amounts of dissolved minerals. In the same volume of solvent, a concentrated solution has a comparatively high solute concentration.

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