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25.0℃ butane vapor pressure 2.3 atm 135℃ ΔH_vap = 24.3 kJ/mol

by 영원파란 2022. 6. 10.

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25.0℃ butane vapor pressure 2.3 atm 135℃ ΔH_vap = 24.3 kJ/mol

 

 

At 25.0℃, the vapor pressure of butane is 2.3 atm.

What is the pressure in the container at 135℃?

ΔH_vap = 24.3 kJ/mol

 

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▶ 참고: Clausius-Clapeyron 식

[ https://ywpop.tistory.com/3133 ]

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> P1 = 2.3 atm, T1 = 273.15 + 25.0 = 298.15 K

> P2 = ? atm, T2 = 273.15 + 135 = 408.15 K

 

 

 

ln(P2/P1) = –ΔH/R (1/T2 – 1/T1)

 

ln(P2/2.3) = –(24300/8.314) (1/408.15 – 1/298.15)

 

P2/2.3 = e^[–(24300/8.314) (1/408.15 – 1/298.15)]

 

P2 = e^[–(24300/8.314) (1/408.15 – 1/298.15)] × 2.3

= 32.3 atm

 

 

 

 

[키워드] 클라우시우스 기준문서, 클라우지우스 기준문서, 클라우 기준문서

 

 

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