Benzene has a heat of vaporization of 30.72 kJ/mol and a normal boiling point of 80.1 °C. At what temperature does benzene boil when the external pressure is 445 torr?
Heat of vaporization of benzene is 30.72 kJ/mol.
Norma boiling point:
The normal boiling point of a liquid is the temperature at which its vapor pressure equals 1 atm.
Normal boiling point of benzene is .
Calculate the temperature at which benzene boils at vapor pressure of 445 torr.
Consider the Clausius-Clapeyron equation as follows:
Here, is the vapor pressure of benzene at temperature , and is the vapor pressure of benzene at temperature , R is the gas constant, and is the heat of vaporization.
From the definition of normal boiling point, vapor pressure of benzene at normal boiling point is 1 atm.
Hence, vapor pressure of benzene at is 1 atm.
Hence,
So, substitute the values in the Clausius-Clapeyron equation as follows:
Convert the temperature in kelvin to as follows:
Therefore, the temperature at which benzene boils at 445 torr vapor pressure is .
Benzene has a heat of vaporization of 30.72 kJ/mol and a normal boiling point of 80.1...
Benzene has a heat of vaporization of 30.72 kJ/mol and a normal boiling point of 80.1 degrees C. At what temperature does benzene boil when the external pressure is 430 torr ? Express your answer in degrees Celsius using two significant figures.
64. Benzene has a heat of vaporization of 30.72 kJ/mol and a normal boiling pressure is 445 torr?
Part A Which substance has the highest boiling point? ОСО CH3OH N2 Submit Request Answer Benzene has a heat of vaporization of 30.72 kJ/mol and a normal boiling point of 80.1 °C. You may want to reference (Pages 503 - 512) section 11.5 while completing this problem. At what temperature does benzene boil when the external pressure is 405 torr ? Express your answer in degrees Celsius using two significant figures. IVO ΑΣΦ ? T = °C Submit Request Answer
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> a clearer step-by-step would have been appreciated :) thanks anyways
Andrea Alex Mon, Nov 22, 2021 11:35 AM