out of H2SO4 AND H3PO4, WHICH ONE IS MORE EFFECTIVE IN CAUSING COAGULATION OF POSITIVELY CHARGED SOL GIVE REASON.
For coagulation of a positviely charged sol, you need a negative charge.
According to Hardy - Schulz rule, the greater the charge on the ion, the greater is its coagulating power.
In H2SO4, The ions are H+ and SO42-.
In H3PO4, the ions are H+ and PO43-
Among these two, PO43- has a greater negative charge on it. Therefore, H3PO4 is more effective in causing coagulation of a positively charged sol.
According to Hardy - Schulz rule, the greater the charge on the ion, the greater is its coagulating power.
In H2SO4, The ions are H+ and SO42-.
In H3PO4, the ions are H+ and PO43-
Among these two, PO43- has a greater negative charge on it. Therefore, H3PO4 is more effective in causing coagulation of a positively charged sol.