Which of the following quantities are the same for 1 mol of H2 and 1 mol of O2 kept at the same temperature in separate containers of equal volume?

Total translational kinetic energy

Average kinetic energy per molecule

Total translational kinetic energy

Average kinetic energy per molecule

JEE Main levelOne or more correct optionsDifficulty 2 of 3ig032

Which of the following quantities are the same for $1 mol$ of $H X_{2}$ and $1 mol$ of $O X_{2}$ kept at the same temperature in separate containers of equal volume?

Translational kinetic energy per mole is

\frac{3}{2} RT

and per molecule is

\frac{3}{2} k_{B} T

, both independent of molar mass (A, D). Equal

n

V

T

give equal

P

(C).

u_{rms} = 3 RT / M

depends on

M

, so (B) differs:

H X_{2}

is four times faster.