Vapour Pressure of Liquid Solutions

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?

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 $\mathrm{T} \mathrm{K} ={\mathrm{t}}^{°}\mathrm{C}+273$]

A hydrocarbon which is virtually immiscible with water was steam distilled at a temperature of $95°\mathrm{C}$ when the atmospheric pressure was $720$ torr. The vapour pressure of pure water at this temperature is $600$ torr and the distillate contains $60$ percent by weight of the hydrocarbon. If the molar mass of hydrocarbon is $\mathrm{M}$, the value of $\frac{\mathrm{M}}{5}$ is:

The vapour pressure of a dilute solution of a solute is not influenced by:

Which of the following aqueous solution has the highest freezing point?

What is boiling point of liquid?

What are the factors which affect vapour pressure?

Explain the effect of temperature on the vapour pressure of a liquid.

What is a vapour pressure of liquid?

What is the correct increasing order of vapour pressure of water, acetone and ether at a temperature of $30º\mathrm{C}$? Given that among these compounds, water has maximum boiling point and ether has minimum boiling point.

The vapour pressure of water at $\mathrm{T} \left(\mathrm{K}\right)$ is $20 \mathrm{mm} \mathrm{Hg}$. The following solutions are prepared at $\mathrm{T} \left(\mathrm{K}\right)$
$\mathrm{I}. 6 \mathrm{g}$of urea (molecular weight $= 60$) is dissolved in $178.2 \mathrm{g}$ of water.
$\mathrm{II}. 0.01 \mathrm{mol}$ of glucose is dissolved in $179.82 \mathrm{g}$ of water.
$\mathrm{III}. 5.3 \mathrm{g}$ of $\mathrm{N}{\mathrm{a}}_2\mathrm{C}{\mathrm{O}}_3$ (molecular weight $= 106$) is dissolved in $179.1 \mathrm{g}$ of water.
Identify the correct order in which the vapour pressure of solutions increases

Vapour pressure of a liquid increases with

A person living at high altitude region observed that cooking food without using pressure cooker takes more time. The reason for this observation is that

Which of the following statements is correct?

The pair of boiling point and compound are given as,



Which will show lowest vapour pressure at room temperature?

On the top of a mountain water boils at

At a constant temperature, which of the following aqueous solutions will have the maximum vapour pressure?

$\left(\mathrm{M}\mathrm{o}\mathrm{l}.\mathrm{ }\mathrm{w}\mathrm{e}\mathrm{i}\mathrm{g}\mathrm{h}\mathrm{t}:NaCl=58.5, H_{2}S{O}_4=98.0 \mathrm{g}\mathrm{r}\mathrm{a}\mathrm{m}.\mathrm{ }\mathrm{m}\mathrm{o}{\mathrm{l}}^{-1}\right)$

Statement - $1$: Only temperature can change the vapour pressure of a pure liquid.

Statement - $2$: Equilibrium constant does not change unless temperature is changed.

A liquid is kept in a closed vessel. If a glass plate of negligible mass with small hole is kept on top of the liquid surface, then vapour pressure of the liquid in the vessel is: