Assertion : When a concentrated solution is diluted by adding more water, molarity of the solution remains…

Assertion : When a concentrated solution is diluted by adding more water, molarity of the solution remains unchanged. Reason : Product of moles of a solute and volume is equal to the molarity.
  1. both assertion and reason are true and reason is the correct explanation of assertion.
  2. both assertion and reason are true but reason is not the correct explanation of assertion.
  3. assertion is true but reason is false.
  4. both assertion and reason are false.

Solution

Molarity equation is written as $M_1 V_1=M_2 V_2$ thus if the $V_2$ changes $M_2$ also changes. Molarity $=\frac{\text { moles of solute }}{\text { volume of solution in litre }}$

Asked in: NEET 2009 (Screening)

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