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ΔTf=Tf,solvent−Tf,solutioncap delta cap T sub f equals cap T sub f comma solvent end-sub minus cap T sub f comma solution end-sub Using the formula Kfcap K sub f for cyclohexane is approximately ), you find the molality and then the moles of solute.

The freezing point is measured again after a known mass of an unknown solid solute is added to the solvent. Calculation of ΔTfcap delta cap T sub f : This is the change in freezing point, calculated as: freewebmaps

The lab report (often listed as Experiment 14 in chemistry courses) is a common laboratory exercise used to determine the molar mass of an unknown substance through freezing point depression , a colligative property. Key Components of the Report Key Components of the Report The final result

The final result is found by dividing the mass of the solute used by the number of moles calculated. Typical Lab Report Values a colligative property.