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Surface Chemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistrySurface Chemistry3 Marks
Question
Explain the following terms with a suitable example in each case:
  1. Shape-selective catalysis.
  2. Dialysis.
✓

Answer

  1. Shape-Selective catalysis: The catalytic reaction that depends upon the pore structure of the catalyst and the size of the reactant and product molecules is called shape-selective catalysis e.g. zeolites.
  2. Dialysis: Removal of soluble impurities from sols by a semipermeable membrane is known as dialysis. e.g. ferric hydroxide sol is purified by this method.

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