NEET UG CHEMISTRY MCQ: STATES OF MATTER

1 Hard

1 of 1

Application +4 | -1

A closed container containing

\mathrm{O}_2

and some liquid water was found to exert

740 \mathrm{~mm}

pressure at

27^{\circ} \mathrm{C}.

(a) Then calculate the pressure exerted by

\mathrm{O}_2

if aqueous tension at

27^{\circ} \mathrm{C}

20 \mathrm{~mm}

(b) What will be the final pressure if volume is reduced to half.

(consider volume of liquid water negligible)

View answer and explanation

Correct option: A

(a)

720 \mathrm{~mm};

(b)

1460 \mathrm{~mm}

Option A ((a)

720 \mathrm{~mm};

(b)

1460 \mathrm{~mm}

) is correct because it accurately calculates the partial pressure of O2 and the final pressure after volume reduction, considering the vapor pressure of water.

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If for the gases, the critical temperatures are mentioned below i.e.

\begin{array}{cccccccccccccccccccc} {\underline {{\text{Gas}}} }&{\underline {\,{\text{Critical}}\,\,{\text{temperature}}} } \\ {\text{A}}&{{T_{{C_1}}}} \\ {\text{B}}&{{T_{{C_2}}}} \\ {\text{C}}&{{T_{{C_3}}}} \\ {\text{D}}&{{T_{{C_4}}}} \end{array}

{T_{{C_1}}} > {T_{{C_2}}} > {T_{{C_3}}} > {T_{{C_4}}}

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