Problem: Use the data provided to calculate benzaldehyde's heat of vaporization.Vapor Pressure (torr)                      Temperature (K)             14.0                                                  345.0         567                                                   441.0Heat of vaporization = ______  kJ/mol

FREE Expert Solution

We’re being asked to determine the heat of vaporization of a substance. We’re given the vapor pressure at two different temperatures. For this problem, we can use the Clausius-Clapeyron Equation:


ln(P2P1)=-HvapR[1T2-1T1]


where:

P1 = vapor pressure at T1

P2 = vapor pressure at T2

ΔHvap = heat of vaporization (in J/mol)

R = gas constant (8.314 J/mol•K)

T1 and T2 = temperature (in K).


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Problem Details

Use the data provided to calculate benzaldehyde's heat of vaporization.

Vapor Pressure (torr)                      Temperature (K)    

         14.0                                                  345.0

         567                                                   441.0


Heat of vaporization = ______  kJ/mol

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Clausius-Clapeyron Equation concept. You can view video lessons to learn Clausius-Clapeyron Equation. Or if you need more Clausius-Clapeyron Equation practice, you can also practice Clausius-Clapeyron Equation practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Forlemu & Kirberger's class at GGC.