Name two colloids that can be prepared by Bredig’s Arc method.
Answers
Answered by
1
Answer:
gold , silver and platinum sols are prepared by this method
Answered by
0
Answer:
Electrical dispersion method (Bredig’s arc method): This method is used for the preparation of sols metals such as gold, silver, platinum etc.
Explanation:
In this method, two electrodes of the metals whose sol is to be prepared are immersed into the dispersion medium and an electric arc is produced by passing high voltage current. The dispersion medium is cooled by surrounding it with a freezing mixture.
Due the heat produced from electric arc , the metal starts vaporizing and the vapour condense into the cold dispersion medium to form to the particles of colloidal size on cooling.
Similar questions