At 40^(@)C the vapour pressure in torr,o...

At `40^(@)C` the vapour pressure in torr,of methyl alcohol - ethyl alcohol solutions is represented by the equation. `P=119X_(A)+135`, where `x_(A)` is mole fraction of methyl alcohol, then the value of `lim_(x_(A)to1)(P_(A))/(x_(A))` is

254 torr

135 torr

199 torr

140 torr

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The correct Answer is:

`P=119X_A+135, overset(lim)underset(X_Ato1)""(P_A)/(X_A)=119+135=254`

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