An HCl molecule has rotational translational and vibrational motions.

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asked Sep 12 in Science by navnit40 (-4,766 points)

An HCl molecule has rotational, translational and vibrational motions. If the rms velocity of HCl molecules in its gaseous phase is bar (v),m is its mass and kB is Boltzmann constant, then its temperature will be –

(1) mv-2/7KB

(2) mv-2/6KB

(3) mv-2/5KB

(4) mv-2/3KB

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answered Sep 12 by muskan15 (-3,447 points)

Correct option  (4)  mv2/3kB  


Energy of molecules = (f/2) KT

For translational (1/2) Mv2 = (3/2) kT

T = Mv2/3k

According to translational equation


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