NEET  >  Kinetic theory of Gases

# Kinetic theory of Gases Video Lecture - Physics Class 11 - NEET

## Physics Class 11

116 videos|451 docs|188 tests

## FAQs on Kinetic theory of Gases Video Lecture - Physics Class 11 - NEET

 1. What is the kinetic theory of gases?
Ans. The kinetic theory of gases is a scientific model that explains the behavior of gases based on the motion of their particles. It states that gases consist of small particles (atoms or molecules) in constant random motion, colliding with each other and the walls of their container. This theory helps us understand various properties of gases, such as pressure, temperature, and volume.
 2. How does the kinetic theory explain the pressure of gases?
Ans. According to the kinetic theory of gases, the pressure exerted by a gas is due to the collisions of its particles with the walls of the container. As the gas particles move randomly and collide with the walls, they exert a force on the walls, resulting in pressure. The more frequent and energetic the collisions, the higher the pressure of the gas.
 3. What is the relationship between temperature and the kinetic energy of gas particles?
Ans. The kinetic theory of gases states that the temperature of a gas is directly proportional to the average kinetic energy of its particles. As the temperature increases, the particles gain more energy and move faster. Conversely, as the temperature decreases, the particles have less energy and move slower. This relationship is described by the equation KE = (3/2) kT, where KE is the average kinetic energy, k is the Boltzmann constant, and T is the temperature in Kelvin.
 4. How does the kinetic theory explain the expansion of gases upon heating?
Ans. When a gas is heated, its particles gain kinetic energy and move faster. As a result, they collide with each other and the walls of the container with increased force. This increased force leads to an expansion of the gas, as the particles push against the walls and create more space between them. Therefore, the kinetic theory of gases explains that heating a gas causes its volume to increase.
 5. Can the kinetic theory of gases explain the behavior of real gases?
Ans. While the kinetic theory of gases provides a good approximation for the behavior of ideal gases, it has limitations when applied to real gases. Real gases deviate from ideal behavior at high pressures and low temperatures, where intermolecular forces become significant. The kinetic theory assumes that gas particles occupy no volume and do not interact with each other, which is not the case for real gases. However, the kinetic theory still serves as a useful model for understanding many properties of gases in most everyday conditions.

## Physics Class 11

116 videos|451 docs|188 tests

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