You are supplied with the following chemicals NaCl, BaCl2 , AlCl3 .1.

1.	You are supplied with the following chemicals NaCl, BaCl2 , AlCl3 .1. Which of these would you prefer most to coagulate a sample of As2S3 sol?2. Arrange the following electrolytes in the increasing order of coagulating power.NaCl, BaCl2 , AlCl33. Name and state the rule based on which you have arrived at the coagulating power of these substances.
Answer» 1. AlCl₃ 2. NaCl < BaCl₂ < AlCl₃ 3. Hardy – Schulze rule. It states that greater the valence of the flocculating ion greater is its power to cause precipitation.

You are supplied with the following chemicals NaCl, BaCl2 , AlCl3 .1. Which of these would you prefer most to coagulate a sample of As2S3 sol?2. Arrange the following electrolytes in the increasing order of coagulating power.NaCl, BaCl2 , AlCl33. Name and state the rule based on which you have arrived at the coagulating power of these substances.

Answer»

1. AlCl₃

2. NaCl < BaCl₂ < AlCl₃

3. Hardy – Schulze rule. It states that greater the valence of the flocculating ion greater is its power to cause precipitation.