Q10 of 31 Page 92

Diatomic molecules like hydrogen have energies due to both translational as well as rotational motion. From the equation in kinetic theory Pv = E , E is

In kinetic theory, ideal gas is treated as point masses. Point masses do not have rotational or vibrational motion. During collision we assume walls exert only perpendicular force on molecules and not parallel force, hence there will not be any rotation. The wall produce only change in translational motion.

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8

An inflated rubber balloon contains one mole of an ideal gas, has a pressure p, volume V and temperature T. If the temperature rises to 1.1 T, and the volume is increased to 1.05 V, the final pressure will be

 9

ABCDEFGH is a hollow cube made of an insulator (Fig. 13.4). Face ABCD has positive charge on it. Inside the cube, we have ionized hydrogen. The usual kinetic theory expression for pressure


 11

In a diatomic molecule, the rotational energy at a given temperature

 12

Which of the following diagrams (Fig. 13.5) depicts ideal gas behaviour?