TS EAMCET 18-July-2022 Shift 1 Solved Paper

According to Hardy Schulze rule, greater the valency of the coagulating ion, greater is its coagulating power. As2S3 is a negatively charged sol. For coagulation, oppositely charged sol is needed. Thus, out of the given, FeCl3(Fe3+) is most effective for causing coagulation of As2S3 sol.