At 298 K, the total vapour pressure in Torr for a mixture of volatile components A and B is given by P = 120 – 75B (B is the mole fraction of B). What is the vapour pressure of pur

Question

At 298 K, the total vapour pressure in Torr for a mixture of volatile components A and B is given by P = 120 – 75B (B is the mole fraction of B). What is the vapour pressure of pure A and B (in Torr) respectively?

Vimal Swarnkar · Accepted Answer

(c) 120 and 45. P = PA° + (PB° − PA°)χB. Compare with P = 120 − 75χB: PA° = 120 Torr; PB° − 120 = −75 → PB° = 45 Torr → (c).

Answer

(a) 120 and 75

Answer

(b) 120 and 195

Answer

(d) 75 and 45

Geo-Scientist Prelims 2020 Chemistry Q63: At 298 K, the total vapour pressure in Torr for a mixture of…

QuestionSolutions / Raoult's law