The migration of positively-charged colloidal particles under an electrical field, towards the cathode is called :

Correct answer: A. Cataphoresis

  • A. Cataphoresis
  • B. Electrosmosis
  • C. Sedimentation
  • D. Electrodialysis

Explanation

If the experiment is set such that only the colloidal particles are allowed to move and not the dispersion media particles it is known as cataphoresis or electrophoresis.

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Solutions are described using molarity, molality, normality, mole fraction, percentage concentration and parts per million. Coverage also includes vapour-pressure lowering, boiling-point elevation, freezing-point depression and osmotic pressure, then distinguishes true solutions, colloids and suspensions by particle size, stability, light scattering and settling.

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