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AP EAMCET202317 May 2023Evening ShiftChemistrySurface ChemistryActual

This equation represents the preparation of gold sol by 2 AuCl ₃+3 HCHO +3 H ₂ O 2 Au +3 HCOOH +6 HCl .

Options

  1. AOxidation
  2. BReduction
  3. CDouble decomposition
  4. DHydrolysis

Correct answer

B. Reduction

Step-by-step solution

In the given reaction, gold ( Au ) goes from +3 state in AuCl ₃ to zero in Au . Thus, reduction is taking place in the preparation of Au sol.

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