1.

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)^(@) ?

Answer»

<P>`(P_(A)^(@)P_(B)^(@))/(P_(A)^(@)+P_(B)^(@))`
`(2P_(A)^(@)P_(B)^(@))/(P_(A)^(@)+P_(B)^(@))`
`(P_(A)^(@))/(P_(A)^(@)+P_(B)^(@))`
`(2P_(B)^(@))/(P_(A)^(@)+P_(B)^(@))`

ANSWER :B


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