| Assertion: When a concentrated solution is diluted by adding more water, the number of moles of solute in the solution remains unchanged. |
| Reason: Number of moles of a solute is equal to the product of molarity and volume of solution in litres. |
A) Assertion and reason both are correct statements and reason is correct explanation for assertion.
B) Assertion and reason both are correct statements but reason is not correct explanation for assertion.
C) Assertion is correct statement but reason is wrong statement.
D) Assertion is wrong statement but reason is correct statement.
Correct Answer: B
Solution :
Moles of solute are equal to product of molarity and volume (i.e., \[Mol\,{{L}^{-1}}\,\times L=Mol\]) and when we add more solvent, the volume increases but the molarity decreases correspondingly so that their product i.e., the total number of moles remains constant.
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