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? - Sri Chaitanya Infinity Learn Best Online Courses for NCERT Solutions, CBSE, ICSE, JEE, NEET, Olympiad and Class 6 to 12

A
Coagulation in both sols can be brought about by electrophoresis
B
Mixing the sols has no effect
C
Sodium sulphate solution causes coagulation in both sols
D
Magnesium chloride solution coagulates, the gold sol more readily than the iron (III) hydroxide sol.

When oppositely charged sols are mixed their charges are neutralised. Both sols may be partially or completely precipitated.

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