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KCET2007ChemistrySurface Chemistry

When a sulphur sol is evaporated sulphur is obtained. On mixing with water sulphur sol is not formed. The sol is

Options

  1. Alyophilic
  2. Breversible
  3. Chydrophobic
  4. Dhydrophilic

Correct answer

C. hydrophobic

Step-by-step solution

Hydrophobic sol are irreversible in nature. They have no affinity between the dispersed phase and the dispersion medium ( H ₂ O ) . Further once precipitated, they do not form the colloidal sol by simple addition of water.

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