Molality is the number of moles of solute dissolved per kg of solvent.

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Solution

Molality is a property of a solution that indicates the moles of solute per kilogram of solvent. Molality is a property of a solution and is defined as the number of moles of solute per kilogram of solvent. The SI unit for molality is mol/kg.

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Q. __________ (Molarity/Molality) is the number of moles of solute dissolved per kg of solvent.

Q. ________ is the number of moles of solute dissolved per kg of solvent.

Q. What is molality of a solution prepared by dissolving 3 moles of solute in 1 kg of solvent?

A scene in a fantasy chemistry lab.
Faraday was measuring the concentration of different solutes in different solutions. But he forgot the exact formula for Molarity, Molality and Normality. He decides to ask his colleagues.

Davy: ''Molarity is the number of moles of solute dissolved in 1 litre of solvent.''
Boyle: ''Molality is the number of moles of solute dissolved in 1 kg of solvent.''
Cavendish: ''Normality is the number of equivalents of solute dissolved in 1 litre of solution.''

Who do you think Faraday should believe? You can choose more than one.

Q. Assertion :Molal elevation constant depends on the nature of the solvent.
Reason: Molal elevation constant is the elevation in boiling point when

1 m o l e

of the solute is dissolved in

1 k g

of solvent.

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