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Maxwell's Distribution of Speeds

In which of t...

Question

In which of the gases given below, the average speed of the molecule is the least at 1000K?

A

$C O_{2}$

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B

$S O_{2}$

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C

$O_{2}$

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D

$C H_{4}$

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Solution

The correct option is B
$S O_{2}$

Speed is inversely proportional to molecular weight. Molecular weight of $S O_{2}$ is highest among the four. Hence its speed is least.

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