Two volatile liquids A and B have vapour pressures of 222 Torr and 444 Torr respectively in an ideal binary solution at 80°C. What is the vapour pressures of pure liquid A if vapour pressure of pure liquid B is 555 Torr, at 80°C?

Question

Priyanshu Gujjar · Answer

Total vapour pressure P = P A ​ + P B ​ P A ​ = 1 0 0 × 2 + 3 2 ​ = 1 0 0 × 5 2 ​ = 4 0 torr P B ​ = 8 0 × 2 + 3 3 ​ = 8 0 × 5 3 ​ = 4 8 torr P T o t a l ​ = P A ​ + P B ​ = 4 0 + 4 8 = 8 8 t

Ansh Shah · Answer

PA=222 PB=444 PoB=555 PoA=? Pb=Pob*xb hence, xb=0.8 we know that for a binary solution, xa+xb=1 so xa=1-0.8=1-Xb=0.2 so, poa=pa/xa=222/0.2=1110 Torr.

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Two volatile liquids A and B have vapour pressures of 222 Torr and 444 Torr respectively in an ideal binary solution at 80°C. What is the vapour pressures of pure liquid A if vapour pressure of pure liquid B is 555 Torr, at 80°C?

Two volatile liquids A and B have vapour pressures of 222 Torr and 444 Torr respectively in an ideal binary solution at 80°C. What is the vapour pressures of pure liquid A if vapour pressure of pure liquid B is 555 Torr, at 80°C?

2 Answers

Total vapour pressure P=PA+PB

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Two volatile liquids A and B have vapour pressures of 222 Torr and 444 Torr respectively in an ideal binary solution at 80°C. What is the vapour pressures of pure liquid A if vapour pressure of pure liquid B is 555 Torr, at 80°C?

Two volatile liquids A and B have vapour pressures of 222 Torr and 444 Torr respectively in an ideal binary solution at 80°C. What is the vapour pressures of pure liquid A if vapour pressure of pure liquid B is 555 Torr, at 80°C?

2 Answers

Total vapour pressure P=PA​+PB​

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Total vapour pressure P=PA+PB