At $300 \ K$,the vapour pressure of a pure liquid $A$ is $70 \ mm \ Hg$. It forms an ideal solution with another liquid $B$. The mole fraction of $B$ in the solution is $0.2$ and the total vapour pressure of the solution is $84 \ mm \ Hg$ at the same temperature. What is the vapour pressure (in $mm \ Hg$) of pure liquid $B$ at $300 \ K$?

When acetone is added to chloroform,then a hydrogen bond is formed between them. These liquids show:

Benzene and toluene form an ideal solution over the entire range of composition. The vapour pressure of pure benzene and toluene at $T \ K$ are $50 \ mmHg$ and $40 \ mmHg$,respectively. What is the mole fraction of toluene in the vapour phase when $117 \ g$ of benzene is mixed with $46 \ g$ of toluene? (Molar mass of benzene and toluene are $78 \ g \ mol^{-1}$ and $92 \ g \ mol^{-1}$,respectively)

Which condition is not satisfied by an ideal solution?

For an ideal binary liquid mixture,which of the following conditions is true?

At $20^o C$,benzene and toluene form an ideal solution. The pure vapor pressure of benzene is $75 \ torr$ and that of toluene is $22 \ torr$. What is the partial vapor pressure of benzene in a solution containing $78 \ g$ of benzene and $46 \ g$ of toluene at $20^o C$?