Question

In a real gas, the molecules will interact with each other. Supposing that the interactions between the molecules are attractive, why would this introduce errors?

A. molecules move faster at lower temperaturees

B. molecules would tend to be closer together at lower temperatures, leading to a lower volume.

C This would not introduce an error.

D. larger molecules show greater attraction to each otheer than smaller molecules.

Answer 1

If interaction is attractive

A. molecules move faster at lower temperaturees --> False, they will be slower due to interaction

B. molecules would tend to be closer together at lower temperatures, leading to a lower volume. --> True, since decrease in T will make them easier to interact (attractive)

C This would not introduce an error. --> false, it does; since they are interacting

D. larger molecules show greater attraction to each otheer than smaller molecules. --> Overall true, but effect will not be large enough

choose B, since it suits better the description