Explain the method of preparation of gold sol by reduction method. – InterviewSolution

1.	Explain the method of preparation of gold sol by reduction method.
Answer» SOLUTION :GOLD solis PREPARED by the REDUCTION of auricchloride usingformaldehyde. `2AuCl_3 + 3HCHO + 3H_2O to 2Au"(SOL)" + 6HCl + 3HCOOH`

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