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Spontaneity

Among N2,O2...

Question

Among $N_{2}, O_{2}$ and $S O_{2}$ , the gas with the highest rate of diffusion is:

A

O_{2}

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B

S O_{2}

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C

N_{2}

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D

all have the same rate

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Solution

The correct option is C $N_{2}$
The rate of diffusion of a gas is inversely proportional to the square root of the molecular mass of the gas.

$R \propto \frac{1}{\sqrt{M}}$

The molar mass of $N_{2}$ is $28$ , which is the lowest among the given options.

So, the rate of diffusion of $N_{2}$ is maximum.

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