Q.

The correct relationship between molarity (M) and molality (m) is (d = density of the solution, in Kg L-1, M2 = molar mass of the solute in kg mol-1)

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answer is A.

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Detailed Solution

Given M=Molarity of solution ; m=molality of solution M2=MW of solute in kg ; d= density of solution in kg/litmolality = nsolute (in magnitude)Wsolvent = 1 kgWsolute(in kg) = nsolute X MW of solute in kgwe know , nsolute = m ; MW of solute in kg = M2

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