Q. Colloidal solution of silver is prepared by:
Solution:
Bredig's arc method or electrical disintegration method is a method of preparation of colloidal solution of metals like gold, silver, platinum.
This method involves both dispersion and condensation. In this process electric arc struck between electrodes of metal of gold, silver or platinum, immersed in dispersion medium. The intense heat vaporises the metal which then condense to form particles of colloidal size.
This method involves both dispersion and condensation. In this process electric arc struck between electrodes of metal of gold, silver or platinum, immersed in dispersion medium. The intense heat vaporises the metal which then condense to form particles of colloidal size.