Which of the following electrolyte will have maximum flocculation value for Fe ( OH )₃ sol??

Step-by-step solution

Flocculation value 1 Coagulating power Fe ( OH ) is a positively charged sol. For coagulating Fe ( OH )₃ negatively charged electrolyte is used and greater the value of -ve charge, coagulating power will be strong. Among given electrolyte, NaCl has lowest coagulating power. Hence, its flocculation value will be maximum.