(D) The graph represents the cooling curve of a mixture of two liquids $A$ and $B$. At point $B$ $(-25^{\circ} C)$,liquid $B$ starts to solidify. Alon

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(D) The graph represents the cooling curve of a mixture of two liquids $A$ and $B$. At point $B$ $(-25^{\circ} C)$,liquid $B$ starts to solidify. Along the curve $BC$,liquid $B$ is solidifying,so two phases (liquid $B$ and solid $B$) co-exist along with liquid $A$. At point $C$ $(-78^{\circ} C)$,liquid $A$ also starts to solidify. Along the line $CD$,both liquid $A$ and liquid $B$ are undergoing solidification. Therefore,the phases present are: liquid $A$,solid $A$,liquid $B$,and solid $B$. Thus,$4$ different phases co-exist along the line $CD$.

Class 11 Chemistry States of Matter Mix Examples- States of Matter

Difficult

$A$ beaker containing a mixture of liquid $A$ and liquid $B$,in equilibrium with each other,is cooled very slowly. If point '$D$' on the graph is where solidification of both liquids is complete,how many different phases co-exist along line '$C D$' if freezing points of liquid $B$ and liquid $A$ are $-25^{\circ} C$ and $-78^{\circ} C$ respectively?

AP EAMCET 2020 All AP EAMCET

A
$1$
B
$2$
C
$3$
D
$4$

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Two flasks of equal volume contain $O_2$ and $CH_3OH$ vapor respectively at $120\,^oC$ and $1.15\, atm$ pressure. Which of the following will be the same for both?

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The normal boiling point of water is $373 \ K$ (at $760 \ mm$). The vapor pressure of water at $298 \ K$ is $23 \ mm$. If the enthalpy of vaporization of water is $40.656 \ kJ/mol$,then the boiling point of water at $23 \ mm$ pressure will be ........... $K$.

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The total pressure of a gas and a few drops of water in a container is $830 \, mm$. If the temperature of the container is decreased by $1 \%$,the new pressure is $............ \, mm$. The water vapor pressures at the two temperatures are $30 \, mm$ and $25 \, mm$ respectively.

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$A$ and $B$ are ideal gases. The molecular weights of $A$ and $B$ are in the ratio of $1: 4$. The pressure of a gas mixture containing equal weights of $A$ and $B$ is $P \text{ atm}$. What is the partial pressure (in $\text{atm}$) of $B$ in the mixture?

MediumAP EAMCET 2005

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Consider the following statements:
Statement-$I$: If thermal energy is stronger than intermolecular forces,the substance prefers to be in a gaseous state.
Statement-$II$: At constant temperature,the density of an ideal gas is proportional to its pressure.
The correct answer is:

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Two flasks of equal volume contain $O_2$ and $CH_3OH$ vapor respectively at $120\,^oC$ and $1.15\, atm$ pressure. Which of the following will be the same for both?

The normal boiling point of water is $373 \ K$ (at $760 \ mm$). The vapor pressure of water at $298 \ K$ is $23 \ mm$. If the enthalpy of vaporization of water is $40.656 \ kJ/mol$,then the boiling point of water at $23 \ mm$ pressure will be ........... $K$.

The total pressure of a gas and a few drops of water in a container is $830 \, mm$. If the temperature of the container is decreased by $1 \%$,the new pressure is $............ \, mm$. The water vapor pressures at the two temperatures are $30 \, mm$ and $25 \, mm$ respectively.

$A$ and $B$ are ideal gases. The molecular weights of $A$ and $B$ are in the ratio of $1: 4$. The pressure of a gas mixture containing equal weights of $A$ and $B$ is $P \text{ atm}$. What is the partial pressure (in $\text{atm}$) of $B$ in the mixture?

Consider the following statements:Statement-$I$: If thermal energy is stronger than intermolecular forces,the substance prefers to be in a gaseous state.Statement-$II$: At constant temperature,the density of an ideal gas is proportional to its pressure.The correct answer is:

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Consider the following statements:
Statement-$I$: If thermal energy is stronger than intermolecular forces,the substance prefers to be in a gaseous state.
Statement-$II$: At constant temperature,the density of an ideal gas is proportional to its pressure.
The correct answer is: