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Surface Chemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistrySurface Chemistry3 Marks
Question
Explain how the phenomenon of adsorption finds application in each ofthe following processes:
  1. Production of vacuum.
  2. Heterogeneous catalysis.
  3. Froth Floatation process.
✓

Answer

  1. Production of vacuum: The remaining traces of air can be adsorbed by charcoal from a vessel to create a vacuum.
  2. Heterogeneous catalysis: Adsorption of reactants on the solid surface of the catalysts increases the rate of reaction.
  3. Froth floatation process: In this process, sulphide ore is concentrated by using pine oil which adsorbs the ore particles and imurities are wetted by water which settle at the bottom.

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