Question

Under what condition molarity is equal to molality

Answer 1

Molality is defined as the no. of moles of solute per kilogram of solvent. Because the density of water at 25°C is around 1kg/litre thus the molality is approximately equal to molarity for dilute aqueous solutions at this temperature.

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Answer 2

Molality is defined as the no. of moles of solute per kilogram of solvent. Because the density of water at 25°C is around 1kg/litre thus the molality is approximately equal to molarity for dilute aqueous solutions at this temperature.