Molarity of a solution of density $$0.9$$ $$g/ml$$ is $$1$$ M. Molality of the same solution under similar conditions will be (Molar$$ mass of solute $$-$$ $$150$$ $$g)

Question

Infinity Learn · Accepted Answer

Molarity of the solution $$=$$ $$1MNumber$$ of moles of solute $$=$$ $$1Volume$$ of the solution $$=$$ $$1000$$ mlDensity of the solution $$=$$ $$0.9$$ $$g/mlWeight$$ of the solution $$=$$ V x d $$=$$ $$900$$ gWeight of solute $$=$$ $$Wsolution-Wsolute$$                          $$=$$ (900$$ $$-$$ $$150) g                         $$=$$ $$750$$ gmolality (m) $$=$$ nsolute×$$1000Wsolvent$$                   $$=1$$×$$1000750=1.33$$ m

Molarity of a solution of density 0.9 g/ml is 1 M. Molality of the same solution under similar conditions will be (Molar mass of solute - 150 g)

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