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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