Worksheet: Hydrophobicity

In this worksheet, we will practice using contact angles to calculate and compare the surface tensions of water–solid interfaces.

Q1:

How does evaporation of a dilute aqueous alcohol solution at 25C affect the alcohol concentration and meniscus curvature?

  • AMeniscus curvature decreases and alcohol concentration increases.
  • BBoth quantities remain constant.
  • CBoth quantities increase.
  • DMeniscus curvature increases and alcohol concentration decreases.
  • EBoth quantities decrease.

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