First slide

Law of equipartition of energy

Question

The average kinetic energy of $H_{2}$ molecule at 300 K is E. At the same temperature the average kinetic energy of $O_{2}$ molecule is

Moderate

A

E
B

$\frac{E}{4}$
C

$\frac{E}{16}$
D

16 E

Solution

The mean kinetic energy of a gas molecule is given by E = $\frac{f k T}{2} .$ For $H_{2} a n d O_{2} m o l e c u l e s f = 2 .$

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