A. Gas particles move in a zigzag pattern until they collide with something. B.

Question

            

                A. Gas particles move in a zigzag pattern until they collide with something.                 B. The pressure of a gas arises from the sum of the collisions of the particles with the walls of the container.                 C. In a mixture of gases, attractive forces between particles cause the measured pressure to be lower than that expected for a pure gas.                 D. When gas particles collide, they lose some of their kinetic energy, and will slow down over time.                 E. Gases are composed of small particles with a small amount of space between them.

Explanation / Answer

B is the only correct answer

A) is wrong because the particle moves in a straight line until collision i.e., due to collisions its path becomes zig-zac and not the other way round

B)Pressure is caused due to the collisions of the gas particles with the container wall

C)According to kinectic theory , for an ideal gas the interaction between particles is neglected(almost 0) therefore there will be no change in pressure if the no of moles in the gaseous mixture and pure gas is the same.

D)According to kinectic theory the collisions are elastic i.e., there is no loss in total energy,but the energy of particle can increase and decrease with time such that the total energy of the system is the same.

E)Gases are composed of particles which are widely spaced,and this is the reason why we neglect attractions between particles

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