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Borek:
Estimate cryoscopic constant for water, knowing that:

In 1 molal glucose solution molar fraction of the glucose is 0.0177.

Saturated vapor pressure over pure water at 0°C is 611 Pa.

ΔHvap is 45.05 kJ/mol (evaporation)

ΔHsub is 51.06 kJ/mol (sublimation)

Borek:
Almost a month has passed and nobody even tried?

Hint: what is the saturated vapor pressure over the ice at 0°C?

Borek:
Another hint: what can you tell about vapor pressures over the ice and the solution at the freezing point?

Vidya:

--- Quote from: Borek on July 12, 2017, 05:18:44 PM ---Another hint: what can you tell about vapor pressures over the ice and the solution at the freezing point?

--- End quote ---
Vaporpressure of ice and solution at the freezing point are equal.

Borek:

--- Quote from: Vidya on July 27, 2017, 09:14:26 AM ---Vaporpressure of ice and solution at the freezing point are equal.

--- End quote ---

Yep.

Can you apply this information to the problem?

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