1. Freezing Point Depression Lab Attempts to correctly record and report data

2. Remember Colligative Properties  T f = i K f mmolality = moles of solute (unknown) kg of solvent (nonpolar solvent) Solvent = 2,6-ditertbutyl-4-methylphenol Mixture = Solvent + Unknown Compound P OSSIBLE U NKNOWNS Stearic Acid para-Dicholorobenzene Naphthalene

3. View your collected data for SOLVENT 

4. Compare your experimental to the actual reported on the board

5. View your collected data for the MIXTURE

6. Draw two best fit lines from the two separate portions of the curves.

7. View your collected data for the MIXTURE

8. 1.Calculate  T f - Plug in. 2.Use the accepted K f 3. Solve for m of the solution mixture. 4.Use m to solve for moles of unknown solute. 1.Use moles to calculate molar mass. 2.ID the unknown. Using the data!  T f = K f mmolality = moles of solute (unknown) kg of solvent (nonpolar solvent)