For the coagulation of a colloid, the order of coagulation power of electrolytes is: Na3PO4 > > . Wh — Surface Chemistry Chemistry Question

💡 Solution & Explanation

Coagulation power of anions is PO4^3- > SO4^2- > Cl-, so the sol is positively charged. Positive sols have a negative diffuse layer (b), move negative medium to anode in electro-osmosis (a), and include basic dyes (c).