Which is an example of the kinetic-molecular theory not holding true for a gas? A. The average kinetic energy of particles depends only on the temperature. B. The particles in a gas travel in straight lines in a continuous, random motion. C. The attraction between particles causes a gas to condense at low temperatures. D. The particles in a gas make up a small portion of the total volume of the gas.

Question

Chemistry

Gael Reilly

23 July, 14:30

Which is an example of the kinetic-molecular theory not holding true for a gas? A. The average kinetic energy of particles depends only on the temperature. B. The particles in a gas travel in straight lines in a continuous, random motion. C. The attraction between particles causes a gas to condense at low temperatures. D. The particles in a gas make up a small portion of the total volume of the gas.

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Ali Peterson · Answer 1

I think the correct answer from the choices listed above is option D. The statement saying that the particles in a gas make up a small portion of the total volume of the gas is not true for a gas which follows kinetic molecular theory. In this theory, one assumption is that particles are much smaller than the distance between particles so most of the volume of a gas is therefore empty space.