Machine-translated by Google. Questions are authored in English.
Top

Discussion

The Kelvin effect states that the equilibrium vapour pressure over a curved droplet surface is

  • A.independent of the radius of the droplet
  • B.higher than over a flat surface of the same liquid
  • C.lower than over a flat surface of the same liquid
  • D.equal to that over a flat surface of the same liquid

Answer: B

Molecules at a strongly curved surface have fewer neighbours holding them in place and escape more readily. The effect grows rapidly as the radius falls, which is precisely what makes very small droplets so hard to sustain.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.