From the following statements, concerning ideal gas at any given temperature T, which of the following statement is incorrect?

Moderate

A

The coefficient of volume expansion at constant pressure is same for all ideal gases.
B

The average translational kinetic energy per molecule of oxygen gas is k_B T(k_B being Boltzmann constant).
C

In a gaseous mixture, the average translational kinetic energy of the molecules of each component is same.
D

The mean free path of molecules increases with the decrease in pressure.

Solution

All statements are correct except the statement given in option (2) and it can be corrected as,
The average translational kinetic energy per molecule is same for molecules of all gases like here O₂ and for each molecule, it is $\frac{3}{2} k_{B} T .$

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