Two liquids A and B are mixed at temperature T in a certain ratio to form an idela solution. It is found that the partial vapoure pressure of A. i.e, `P_(A)` is equal to `p_(s)`. The vapoure pressure of B for the liquid mixture. Whatis the total vapour pressure of the liquid mixture in terms of `P_(A)^(@) and P_(B)^(@)` ?

Options

A. `(P_(A)^(@)P_(B)^(@))/(P_(A)^(@)+P_(B)^(@))`
B. `(2P_(A)^(@)P_(B)^(@))/(P_(A)^(@)+P_(B)^(@))`
C. `(P_(A)^(@))/(P_(A)^(@)+P_(B)^(@))`
D. `(2P_(B)^(@))/(P_(A)^(@)+P_(B)^(@))`

Answer

B