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For coagulation of Arsenious sulphide sol, which one of the following salt solution will be most effective

Options

  1. AAlC l 3
  2. BNaCl
  3. CBaC l 2
  4. DN a 3 P O 4

Correct answer

A. AlC l 3

Step-by-step solution

Arsenious sulphide is -ve charged colloid. Hence, cation having maximum positive charge will be most effective for coagulation. (Hardy Schulz rule) A l 3 + > B a 2 + > N a + (coagulating power)

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