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

Usually, cyclohexane is used as the solvent. Its pure freezing point is recorded from a cooling curve. freewebmaps

The final result is found by dividing the mass of the solute used by the number of moles calculated. Typical Lab Report Values The freezing point is measured again after a

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 The final result is found by dividing the

Solved Experiment 14 Report Sheet Molar Mass of a Solid Date

A solid lab report for this experiment typically includes the following data sections and calculations:

Î”Tf=Tf,solventâˆ’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.