Q6) A liquid is placed into a sealed vial and set on the benchtop to equilibrate at room temperature (25.0° C), and the vapor pressure is measured to be 400. torr. The flask is then heated to 42.0° C, with a new vapor pressure being measured to be 760. torr. What is the enthalpy of vaporization (in kJ/mol) for the liquid? a) 26.3 kJ/mol b) 29.5 kJ/mol c) 330 kJ/mol d) 0.98 kJ/mol
Q6) A liquid is placed into a sealed vial and set on the benchtop to equilibrate at room temperature (25.0° C), and the vapor pressure is measured to be 400. torr. The flask is then heated to 42.0° C, with a new vapor pressure being measured to be 760. torr. What is the enthalpy of vaporization (in kJ/mol) for the liquid? a) 26.3 kJ/mol b) 29.5 kJ/mol c) 330 kJ/mol d) 0.98 kJ/mol
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Chapter6: Thermochemisty
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Problem 6.83QP: The cooling effect of alcohol on the skin is due to its evaporation. Calculate the heat of...
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Transcribed Image Text:Q6) A liquid is placed into a sealed vial and set on the benchtop to equilibrate at room temperature (25.0° C), and the
vapor pressure is measured to be 400. torr. The flask is then heated to 42.0° C, with a new vapor pressure being measured
to be 760. torr. What is the enthalpy of vaporization (in kJ/mol) for the liquid?
a) 26.3 kJ/mol
b) 29.5 kJ/mol
c) 330 kJ/mol
d) 0.98 kJ/mol
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