Question

2.82g of glucose is dissolved in 30g of water.calculate the molality of solution

Answer 1

Answer:

0.52 mol/kg

Explanation:

Molality is defined as number of solute present in 1 kg of solvent.

Molality = Number of moles of solute / Mass of solvent in kg

Number of moles of glucose (solute) = 2.82/180

Mass of water in kg = 0.03 kg

Molality = 2.82/180 *  1/0.03

Molality = 0.52 mol/kg

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