The average speed of an ideal gas molecule at ${27^0}C$ is $0.3{\rm{m}}{\sec ^{ - 1}}$. The average speed at ${\rm{9}}{27^0}C$ will be ${\rm{m}}{\sec ^{ - 1}}$

NEET UG CHEMISTRY MCQ: STATES OF MATTER

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Application +4 | -1

The average speed of an ideal gas molecule at

{27^0}C

0.3\mathrm{m}{\sec ^{ - 1}}

. The average speed at

\mathrm{9}{27^0}C

will be

\mathrm{m}{\sec ^{ - 1}}

View answer and explanation

Correct option: A

0.6

Option A (0.6) is correct because the average speed of gas molecules is proportional to the square root of the absolute temperature.

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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