Critical density of a gas having molecular weight $39 \mathrm{~g} \mathrm{~mol}^{-1}$ is $0.1 \times 10^3 \mathrm{~g} \mathrm{~cm}^{-3}$. Its critical volume in $\mathrm{L} \mathrm\,\,{mol}^{-1}$ is

NEET UG CHEMISTRY MCQ: STATES OF MATTER

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Critical density of a gas having molecular weight

39 \mathrm{~g} \mathrm{~mol}^{-1}

0.1 \times 10^3 \mathrm{~g} \mathrm{~cm}^{-3}

. Its critical volume in

\mathrm{L} \mathrm\,\,{mol}^{-1}

View answer and explanation

Correct option: A

0.39

Option A (0.39) is correct because critical volume is the inverse of critical density multiplied by the molar mass.

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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