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Question

The average kinetic energy of the molecules of an ideal gas is directly proportional to what?


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Solution

Kinetic energy

  1. It is a form of energy that an object or particle has because of its motion.
  2. Kinetic energy, K=12mv2

Explanation

Heat, Temperature, and Thermal energy
  1. As temperature increases, the velocity of particle increases; as the square of velocity is directly proportional to the kinetic energy of the gas, kinetic energy also increases.
  2. So, the kinetic energy of a molecule of a gas is directly proportional to the absolute temperature of the gas.
  3. An increase in temperature increases the speed at which the gas molecules move, i.e., increases the kinetic energy.
  4. A decrease in temperature decreases the speed at which the gas molecules move, i.e., decreases the kinetic energy.

The kinetic energy of a molecule of a gas is directly proportional to the absolute temperature of the gas.


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