An ideal solution has two components $A$ and $B$. If $A$ is more volatile than $B$,then the correct relation between mole fraction of $A$ in liquid $(X_A)$ and vapour phase $(Y_A)$ is:

Which of the following is not correct?

In a mixture of $A$ and $B$ components,the solution shows positive deviation from Raoult's law when:

Explain the terms ideal and non-ideal solutions in the light of forces of interactions operating between molecules in liquid solutions.

On mixing $10 \ mL$ of acetone with $40 \ mL$ of chloroform,the total volume of the solution is

Liquids $A$ and $B$ form an ideal solution over the entire range of composition. At temperature $T$,an equimolar binary solution of liquids $A$ and $B$ has a vapour pressure of $45 \ Torr$. At the same temperature,a new solution of $A$ and $B$ having mole fractions $x_A$ and $x_B$,respectively,has a vapour pressure of $22.5 \ Torr$. The value of $x_A / x_B$ in the new solution is . . . . . (Given that the vapour pressure of pure liquid $A$ is $20 \ Torr$ at temperature $T$)