Freezing Point Depression

Freezing Point Depression - Chemistry 1120 Freezing Point...

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Freezing Point Depression 1. Data Table #1 for Pure Solvent Mass of test tube + solid cork 43.566 g Mass of test tube + solid cork + p-xylene 59.777 g Mass of p-xylene 16.211 g Data Table #2 for Unknown Molecular Weight Determination Unknown letter A Mass of solid unknown 1.500 g Mass of unknown added to test tube 1.500 g Results Table #3 Freezing point of p-xylene, T f ° 13.00 ° C Freezing point of solution, T f 10.60 ° C Value for T f 2.40 ° C Molality of unknown solution, m 0.558 m Mass of p-xylene (in grams) 16.211 g Mass of p-xylene (in kilograms) 0.016211 kg Moles of unknown solute 0.00905 moles Mass of unknown added to test tube 1.500 g MW of unknown solute 1.66 × 10 -2 g/mol 2. Show the calculation for obtaining the mass of p-xylene used in the experiment. 59.777 g (mass of test tube + solid cork + p-xylene) – 43.566 g (mass of test tube + solid cork) = 16.211 g (mass of p-xylene) 3. Show the calculation for obtaining the mass of unknown added. State whether your
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Freezing Point Depression - Chemistry 1120 Freezing Point...

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