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Published byBenjamin Blake Modified over 9 years ago
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Freezing Point Depression Lab Attempts to correctly record and report data
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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
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View your collected data for SOLVENT
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Compare your experimental to the actual reported on the board
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View your collected data for the MIXTURE
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Draw two best fit lines from the two separate portions of the curves.
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View your collected data for the MIXTURE
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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)
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