Medium
$Fe(OH)_3$ sol and gold sol are positively and negatively charged,respectively. Which of the following statements is incorrect?
- ACoagulation of both sols can be carried out by electrophoresis.
- BBoth sols can be coagulated by sodium sulfate solution.
- CMixing the two sols has no effect.
- DGold sol is coagulated more rapidly than $Fe(OH)_3$ sol by magnesium chloride solution.
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