Question

what is the molality of a solution made by dissolving 1 mole of sugar in 4kg of solvent​

Answer 1

Answer:

0.25m

Explanation:

molality=no.of moles of solute/mass of solution in kg

no of moles of solute(sugar)=1

mass of solution in kg (solvent)=4kg

molality=1/4=0.25m

Answer 2

The molality of sugar is $0.25$.

Molality is a measure of the number of moles of solute in a solution corresponding to $1$ kg or $1000$ g of solvent. This contrasts with the definition of molarity which is based on a specified volume of solution. A commonly used unit for molality in chemistry is mol/kg.

$=\frac{Number of moles of solute}{mass of solvent in kg}$

Molar mass of sugar $=4kg$

Mass of sugar $=1$

Number of moles of sugar $=\frac{1}{4}=0.25mol$

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