1.

p_(A) and p_(B) are the vapour pressure of pure liquid components, A and 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

Answer»

<P>`p_(A) + x_(A)(p_(B)-p_(A))`
`P_(A)+ x_(A)(p_(A)-p_(B))`
`p_(B)+x_(A)(p_(B)-p_(A))`
`p_(B)+x_(A)(p_(A)-p_(B))`

Solution :According to Raoult.s law
`p=x_(A)p_(A)+x_(B)p_(B)`
For binary solution, `x_(A)+x_(B)=1` or `[x_(B)=1-x_(A)]`
`p=x_(A)p_(A)+(1-x_(A))p_(B)`
`=x_(A)p_(A)+p_(B)-x_(A)p_(B)`
or `=p_(B)+x_(A)(p_(A)-p_(B))`


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