Vapour Pressure of Liquid Solutions

Which of the following plots does not represent the behaviour of an ideal binary liquid solution?

The vapour pressure vs. temperature curve for a solution solvent system is shown below.

The boiling point of the solvent is _____°C.

Which of the given statements is correct with respect to a liquid?

Two liquids $\mathrm{A}$ and $\mathrm{B}$ boil at $145° \mathrm{C}$ and $190° \mathrm{C}$ respectively. Which of them has a higher vapour pressure at $80° \mathrm{C}$?

Why boiling point of water is increased on the addition of sodium chloride into it?

Why does vapour pressure of a liquid decrease when a non-volatile solute is added into it?

Why is the vapour pressure of a liquid constant at a constant temperature?

The vapour pressure of ethanol is $115$ torr at $34.9°\mathrm{C}$. if ${\mathrm{\Delta H}}_{\mathrm{vap} }$ of ethanol is $38.6 \mathrm{kJ}/\mathrm{mol}$. Calculate the temp. $\left({}^{\circ }\mathrm{C}\right)$ when then vapour pressure is $760$ torr.

The vapour pressure of ethanol is $115 \mathrm{torr}$ at $34.9°\mathrm{C}$ if $∆{\mathrm{H}}_{\mathrm{vap}}$ of ethanol is $38.6 \mathrm{kJ}/\mathrm{mol}$. Calculate the temperature $\left(°\mathrm{C}\right)$ when the vapour pressure is $760 \mathrm{torr}$. [Use relation $\mathrm{T} \mathrm{K} ={\mathrm{t}}^{°}\mathrm{C}+273$]

Define the vapour pressure of a liquid. What happens to the vapour pressure when the dissolved solute is non-volatile.

Describe the relation between vapour pressure and surface area.

Why is the vapour pressure of a solution of glucose in water lower than that of water?

$\mathrm{Benzene} \left({\mathrm{C}}_6{\mathrm{H}}_6\right) \mathrm{and} \mathrm{toluene} \left({\mathrm{C}}_7{\mathrm{H}}_8\right) \mathrm{form} \mathrm{a} \mathrm{nearly} \mathrm{ideal} \mathrm{solution} \mathrm{at} 313 \mathrm{K}. \mathrm{The} \mathrm{vapour} \mathrm{pressures} \mathrm{of} \mathrm{pure} \mathrm{benzene} \mathrm{and} \mathrm{toluene} \mathrm{are} 160 \mathrm{mm} \mathrm{of} \mathrm{Hg} \mathrm{and} 60 \mathrm{mm} \mathrm{of} \mathrm{Hg} \mathrm{respectively}. \mathrm{Calculate} \mathrm{the} \mathrm{partial} \mathrm{pressure} \mathrm{of} \mathrm{benzene} \mathrm{and} \mathrm{toluene} \mathrm{and} \mathrm{the} \mathrm{total} \mathrm{pressure} \mathrm{over} \mathrm{the} \mathrm{following} \mathrm{solution} \mathrm{containing} \mathrm{equal} \mathrm{molecules} \mathrm{of} \mathrm{benzene} \mathrm{and} \mathrm{toluene}.$

$\mathrm{Benzene} \left({\mathrm{C}}_6{\mathrm{H}}_6\right) \mathrm{and} \mathrm{toluene} \left({\mathrm{C}}_7{\mathrm{H}}_8\right) \mathrm{form} \mathrm{a} \mathrm{nearly} \mathrm{ideal} \mathrm{solution} \mathrm{at} 313 \mathrm{K}. \mathrm{The} \mathrm{vapour} \mathrm{pressures} \mathrm{of} \mathrm{pure} \mathrm{benzene} \mathrm{and} \mathrm{toluene} \mathrm{are} 160 \mathrm{mm} \mathrm{of} \mathrm{Hg} \mathrm{and} 60 \mathrm{mm} \mathrm{of} \mathrm{Hg} \mathrm{respectively}. \mathrm{Calculate} \mathrm{the} \mathrm{partial} \mathrm{pressure} \mathrm{of} \mathrm{benzene} \mathrm{and} \mathrm{toluene} \mathrm{and} \mathrm{the} \mathrm{total} \mathrm{pressure} \mathrm{over} \mathrm{the} \mathrm{following} \mathrm{solution} \mathrm{containing} 1 \mathrm{mole} \mathrm{of} \mathrm{benzene} \mathrm{and} 4 \mathrm{moles} \mathrm{of} \mathrm{toluene}.$

If an aqueous solution of glucose is allowed to freeze, then crystals of which will be seperated out first?

$\mathrm{Benzene} \left({\mathrm{C}}_6{\mathrm{H}}_6\right) \mathrm{and} \mathrm{toluene} \left({\mathrm{C}}_7{\mathrm{H}}_8\right) \mathrm{form} \mathrm{a} \mathrm{nearly} \mathrm{ideal} \mathrm{solution} \mathrm{at} 313 \mathrm{K}. \mathrm{The} \mathrm{vapour} \mathrm{pressures} \mathrm{of} \mathrm{pure} \mathrm{benzene} \mathrm{and} \mathrm{toluene} \mathrm{are} 160 \mathrm{mm} \mathrm{of} \mathrm{Hg} \mathrm{and} 60 \mathrm{mm} \mathrm{of} \mathrm{Hg} \mathrm{respectively}. \mathrm{Calculate} \mathrm{the} \mathrm{partial} \mathrm{pressure} \mathrm{of} \mathrm{benzene} \mathrm{and} \mathrm{toluene} \mathrm{and} \mathrm{the} \mathrm{total} \mathrm{pressure} \mathrm{over} \mathrm{the} \mathrm{following} \mathrm{solution} \mathrm{containing} \mathrm{equal} \mathrm{weights} \mathrm{of} \mathrm{benzene} \mathrm{and} \mathrm{toluene}.$

An aqueous solution of methanol in water has vapour pressure

Why boiling of an egg or cooking of rice in an open vessel takes more time at a hill station?

The boiling point of carbon tetrachloride is ${77}^{\mathrm{o}}\mathrm{C}$ and its heat of vaporisation is $31 \mathrm{kJ} {\mathrm{mol}}^{-1}$. Calculate the vapour pressure of carbon tetrachloride in atmospheres at ${25}^{\mathrm{o}}\mathrm{C}$.

Why is liquid ammonia bottle first cooled in ice before opening it ?