Chemistry 5070 · O Level · Diffusion

Diffusion — practice question

Two containers, one containing methane and the other containing butane, are positioned at the same distance from a naked flame. The two gases are then released together. The methane reaches the flame and ignites before the butane gets there. Which statement best explains this?

  • AEach methane molecule has a higher proportion of hydrogen than each butane molecule.
  • BMethane does not have isomers, butane does have isomers.
  • CMethane has a higher boiling point than butane.
  • DMethane molecules have a smaller mass than butane molecules.

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