NEET UG CHEMISTRY MCQ: STATES OF MATTER

1 Medium

1 of 1

Application +4 | -1

{O_2}

is collected over water at

20\,^\circ C

. The pressure inside shown by the gas is 740 mm of Hg. What is the pressure due to

{\mathrm{O}_2}

alone if vapour pressure of

{\mathrm{H}_2}\mathrm{O}

is 18 mm at

20\,\,^\circ C

View answer and explanation

Correct option: A

722\mathrm{ }\,\,mm

Option A (

722\mathrm{ }\,\,mm

) is correct because the partial pressure of oxygen is the total pressure minus the vapor pressure of water.

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\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}}}

{r^x}

r

x