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# Vapor Pressure Sample Question

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The vapor pressure of ethanol is 400 mmHg at 63.5 C. Its molar enthalpy of vaporization is 39.3 K Joule/mol. What is the vapor pressure of ethanol, in mmHg, at 34.9 C? Show work.

For iodine, the molar enthalpy of sublimation is 62.3 k Joule/mol. The molar enthalpy of fusion is 15.3 k/Joule/mol. Calculate the molar enthalpy of vaporization of liquid ioline. Show work. Thanks for your help.

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The vapor pressure of ethanol is 400 mmHg at 63.5 C. Its molar enthalpy of vaporization is 39.3 K Joule/mol. What is the vapor pressure of ethanol, in mmHg, at 34.9 C? Show work.
The Clausius - Clapeyron equation predicts the temperature dependence of vapor pressures of pure liquids or solids:
ln (P/P°) =
where P is the vapor pressure, P° is a vapor pressure at a known temperature T°, H ...

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The expert examines vapor pressure of ethanol.

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