Write short note on Cataphoresis or electrophoresis.

1.	Write short note on Cataphoresis or electrophoresis.
Answer» Cataphoresis or Electrophoresis:- The particles of colloidal solution are electrically charged either +ve or -ve and hence when and electric current is passed through colloidal solution, the colloidal particles move towards opposite electrodes. On reaching the electrodes they get discharged and precipitate out. Thus a negatively charges sol like that of AS₂S₃ when taken in a U-tube the colloidal particles move towards +ve electrodes while positively charged sol. like that of Fe(OH)₃ when taken in a U-tube the sol. particles move towards -ve electrode. "This movement of colloidal particle in electric field is known as Cataphoresis."

Answer»

Cataphoresis or Electrophoresis:- The particles of colloidal solution are electrically charged either +ve or -ve and hence when and electric current is passed through colloidal solution, the colloidal particles move towards opposite electrodes. On reaching the electrodes they get discharged and precipitate out. Thus a negatively charges sol like that of AS₂S₃ when taken in a U-tube the colloidal particles move towards +ve electrodes while positively charged sol. like that of Fe(OH)₃ when taken in a U-tube the sol. particles move towards -ve electrode.

"This movement of colloidal particle in electric field is known as Cataphoresis."

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