The vapor pressure of a substance is 0.0500 bars at 300 K. If AvapH = 32.6 kJ/mol, at what temperature will the substance have a vapor pressure of 0.200 bars?

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The vapor pressure of a substance is 0.0500 bars at 300 K. If Δ<sub>vap</sub>H = 32.6 kJ/mol, at what temperature will the substance have a vapor pressure of 0.200 bars?
Transcribed Image Text:The vapor pressure of a substance is 0.0500 bars at 300 K. If Δ<sub>vap</sub>H = 32.6 kJ/mol, at what temperature will the substance have a vapor pressure of 0.200 bars?
Expert Solution
Step 1

Given data:

Pressure p1 = 0.0500 bars

Enthalpy of vaporization  Hvap = 32.6 kJ/mol

Pressure p= 0.200 bars

Here the temperature T1 = 300k

Solution:

The Temperature pressure relation for the Enthalpy of vapourization is determined by the following expression that is,

ln(p2p1) =-HvapR(1T2-1T1)

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