Molar Mass By Freezing Point Depression You are asked to determine the molar mass of an unknown compound by using the technique of freezing point depression. You obtain the following data. Freezing Point of Pure Solvent Mass of Pure Solvent Mass of Unknown Compound Freezing Point of Solution 12.7 °C 22.68 grams 2.15 grams 10.4 °C Kfor Pure Solvent 4.62 °C/molal Use this data to determine the molar mass of the unknown compound. Assume that it does not dissociate when it dissolves.

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Molar Mass By Freezing Point Depression
You are asked to determine the molar mass of an unknown compound by using the technique of
freezing point depression.
You obtain the following data.
Freezing Point of Pure Solvent
Mass of Pure Solvent
Mass of Unknown Compound
Freezing Point of Solution
12.7 °C
22.68 grams
2.15 grams
10.4 °C
Kfor Pure Solvent
4.62 °C/molal
Use this data to determine the molar mass of the unknown compound. Assume that it does not
dissociate when it dissolves.
Transcribed Image Text:Molar Mass By Freezing Point Depression You are asked to determine the molar mass of an unknown compound by using the technique of freezing point depression. You obtain the following data. Freezing Point of Pure Solvent Mass of Pure Solvent Mass of Unknown Compound Freezing Point of Solution 12.7 °C 22.68 grams 2.15 grams 10.4 °C Kfor Pure Solvent 4.62 °C/molal Use this data to determine the molar mass of the unknown compound. Assume that it does not dissociate when it dissolves.
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