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Ideal gas molecules

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Question 27

Liquid neon boils at 27.1 K27.1\text{ K}27.1 K under standard atmospheric pressure.

a.

Convert 27.1 K27.1\text{ K}27.1 K to a temperature in ∘C{}^\circ\text{C}∘C.

[1]
b.

Liquid neon vaporises to form neon gas. State two ways in which the arrangement and motion of the neon atoms change as the liquid becomes a gas.

[2]
c.

The average kinetic energy of the atoms in an ideal gas depends on its temperature. Sketch a graph to show how the average kinetic energy of the neon atoms varies with temperature in ∘C{}^\circ\text{C}∘C, clearly labeling the axes and any key intercepts.

[2]
d.

A student uses the horizontal capillary tube apparatus shown below to investigate the relationship between the temperature and the volume of a gas at constant pressure.

Apparatus with horizontal capillary tube and ruler

Describe how this apparatus can be set up and used to investigate how the volume of the trapped gas column varies with temperature. In your description, you should:

  • identify any additional measuring instruments needed
  • explain how the temperature of the gas is varied and measured
  • explain how the volume of the trapped gas is measured
  • state how the results can be analyzed to show the relationship.
[5]

Ideal gas molecules Questions

  1. IGCSE
  2. /Physics
  3. /Ideal gas molecules