The freezing point of a solution that contains 1.1 g of an unknown compound, (A), dissolved in 12 g of benzene is found to be 2.97 °C. The freezing point of pure benzene is 5.48 °C. The freezing point depression constant of benzene is 5.12 °C/molal. What is the molecular weight of the unknown compound?

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The freezing point of a solution that contains 1.1 g of an unknown compound, (A),
dissolved in 12 g of benzene is found to be 2.97 °C.
The freezing point of pure benzene is 5.48 °C. The freezing point depression constant
of benzene is 5.12 °C/molal. What is the molecular weight of the unknown
compound?
Transcribed Image Text:The freezing point of a solution that contains 1.1 g of an unknown compound, (A), dissolved in 12 g of benzene is found to be 2.97 °C. The freezing point of pure benzene is 5.48 °C. The freezing point depression constant of benzene is 5.12 °C/molal. What is the molecular weight of the unknown compound?
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