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Gas laws from KTG

At 0o C tem...

Question

At $0^{o} C$ temperature root mean square speed of which of the following gases be maximum?

H_{2}

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N_{2}

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O_{2}

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S O_{2}

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Solution

The correct option is A $H_{2}$
$v_{r m s} = \sqrt{\frac{3 R T}{m}}$
So the root mean square velocity of the gas in inversely proportional the mass at a particular temperature.
So, $H_{2}$ will have maximun value of $v_{r m s}$ at $0^{\circ} C$ .

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