Ethanol Has an Enthalpy of Vaporization of 42 $\circ$ CAt What Temperature Is the Vapor Pressure Equal to 0

question 27

Multiple Choice

Ethanol has an enthalpy of vaporization of 42.3 kJ/mol.The compound has a vapor pressure of 1.00 atm at 78.3 ^$\circ$ C.At what temperature is the vapor pressure equal to 0.800 atm? (R = 8.314 J/K.mol)

• A) -83.8 \(\circ\) C
• B) -24.4 \(\circ\) C
• C) 62.6 \(\circ\) C
• D) 73.0 \(\circ\) C
• E) 78.0 \(\circ\) C

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