22℃ 에틸렌 글라이콜 용액에서 물의 증기압. X_ethylene glycol = 0.288

22℃ 에틸렌 글라이콜 용액에서 물의 증기압. X_ethylene glycol = 0.288

순수한 물의 증기압 = 19.83 mmHg

 

 

Calculate the vapor pressure of water over each of the following ethylene glycol (C2H6O2) solutions at 22℃ (vp pure water = 19.83 mmHg).

Ethylene glycol can be assumed to be nonvolatile.

a) X_ethylene glycol = 0.288

b) % ethylene glycol by mass = 39.0%

c) 2.42 m ethylene glycol

 

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a) X_ethylene glycol = 0.288

 

X_water = 1 – 0.288 = 0.712

( 참고 https://ywpop.tistory.com/2659 )

 

 

 

P_용액 = X_용매 × P°_용매

( 참고 https://ywpop.tistory.com/2646 )

 

= (0.712) (19.83 mmHg)

= 14.12 mmHg

 

 

 

답: 14.1 mmHg

 

 

 

[키워드] 22℃ C2H6O2 19.83 mmHg X_ethylene glycol 0.288