Which of the following is not an assumption of kinetic theory of gase...
Molecules of an ideal gas move with different speed in all possible direction.
Which of the following is not an assumption of kinetic theory of gase...
The kinetic theory of gases is a model that describes the behavior of gas molecules based on their motion and interactions. It is based on several assumptions that help simplify the understanding of gas behavior. Let's examine each assumption and explain why option C is not an assumption of the kinetic theory of gases:
a) The volume occupied by the molecules of the gas is negligible in comparison to the volume of the container:
This assumption implies that the individual gas molecules are so small compared to the overall volume of the container that their individual volumes can be ignored. In other words, the gas molecules are considered point masses. This assumption allows for the simplification of calculations and equations involving gas behavior.
b) Intermolecular force of attraction/repulsion between the molecules is negligible:
According to this assumption, the interactions between gas molecules are considered to be minimal. The only significant forces that are considered are the collisions between molecules and the walls of the container. This assumption assumes that the molecules do not exert any attractive or repulsive forces on each other, allowing for the ideal gas behavior to be described.
c) All molecules of a gas move with equal speed:
This assumption is not valid in the kinetic theory of gases. In reality, the molecules of a gas move with a wide range of speeds, following a distribution known as the Maxwell-Boltzmann distribution. This distribution describes the probability of finding a gas molecule with a particular speed. It takes into account factors such as temperature and molecular mass to determine the distribution of molecular speeds.
d) The collision between the molecules with the wall of the container are elastic:
This assumption states that the collisions between gas molecules and the walls of the container are perfectly elastic, meaning that there is no loss of kinetic energy during the collision. This assumption allows for the conservation of momentum and the transfer of energy from the gas molecules to the walls of the container.
In conclusion, option C is not an assumption of the kinetic theory of gases because it states that all molecules of a gas move with equal speed, which is not true in reality. The correct assumption is that the molecules of a gas have a range of speeds described by the Maxwell-Boltzmann distribution.
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