1.

If x_(1) and x_(2) represent the mole fraction of a component A in the vapour phase and liquid mixture respectively and p_(A)^(@) and p_(B)^(@) represent vapours pressures of pure A and pure B. then total vapour pressure of the liquid mixture is

Answer»

`(p_(A)^(@)-x_(1))/(x_(2))`
`(p_(A)^(@)-x_(2))/(x_(1))`
`(p_(B)^(@)x_(1))/(x_(2))`
`(p_(B)^(@)x_(2))/(x_(1))`

SOLUTION :Mole fraction in the VAPOUR phase `(x_(1))=(p_(A))/(P_("total"))`
But `p_(A)=x_(A)xxp_(A)^(@)=x_(2)xxp_(A)^(@)`
Hence, `x_(1)=(x_(2)p_(A)^(@))/(P_("total"))or P_("total")=(p_(A)^(@)x_(2))/(x_(1))`


Discussion

No Comment Found

Related InterviewSolutions