Question

Consider the following statements:
Statement – 1: On dilution, molarity of the solution changes.
Statement – 2: Number of moles of the solute in a solution does not change on dilution.

• A. Both statements are true.
• B. Both statements are false.
• C. Statement – 1 is true but statement – 2 is false.
• D. Statement – 1 is false but statement – 2 is true.

Answer 1

The correct option is A Both statements are true.

Molarity $=\frac{\text{Number of moles of solute}}{\text{Volume of solution in L}}$
On dilution, volume of the solution increases and thus the molarity decreases. But the number of moles of solute does not change on dilution.
Thus, both the statements are true.