Question
Question: The disperse phase in colloidal iron (III) hydroxide and colloidal gold is positively and negatively...
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?
A
(a) Coagulation in both sols can be brought about by electrophoresis
A
(b) Mixing the sols has no effect
A
(c) Sodium sulphate solution causes coagulation in both sols
A
(d) Magnesium chloride solution coagulates, the gold sol more readily than the iron (III) hydroxide
Explanation
Solution
(b)
Sol. On mixing, they will coagulate each other being +ve and – ve charged.