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_(A) + X_(A) (P_(B) - P_(A))`
B. `P_(A) + X_(A) (P_(A) - P_(B))`
C. `P_(B) +X_(A) (P_(B) - P_(A))`
D. `P_(B) +X_(A) (P_(A)-P_(B))`

Answer 1

Correct Answer - D
`P_("Total")=X_(A)P_(A)+X_(B)P_(B)=X_(A)P_(A)+(1-X_(A))P_(B)`
`P_(B)+X_(A)(P_(A)-P_(B))`