Question

`P_(A)and P_(B)` are the vapour pressure of pure liquid components ,Aand B respectively of an ideal binary solution,If `x_(A)` represents the mole fraction of component A, the total pressure of the solution will be
A. `P_(B)+X_(A)(P_(B)-P_(A))`
B. `P_(B)+X_(A)(P_(A)-P_(B))`
C. `P_(A)+X_(A)(P_(B)-P_(A))`
D. `P_(A)+X_(A)(P_(A)-P_(B))`

Answer 1

Correct Answer - B
`P=P_(A)^(@)X_(A)+P_(B)^(@)X_(B)`
`P=P_(A)xx(X_(A))+P_(B)^(@)(1-X_(A))`
`P=P_(B)+X_(A)(P_(A)-P_(B))`