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The disperse phase in colloidal iron (III) hydroxide and colloidal gold is positively and negatively charged, respectively, which of the following statements is NOT correct?

Options

  1. Amagnesium chloride solution coagulates, the gold sol more readily than the iron (III) hydroxide sol.
  2. Bsodium sulphate solution causes coagulation in both sols
  3. Cmixing the sols has no effect
  4. Dcoagulation in both sols can be brought about by electrophoresis

Correct answer

C. mixing the sols has no effect

Step-by-step solution

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