Gold Does Not React with Either Nitric Acid or Hydrochloric

question 12

Multiple Choice

Gold does not react with either nitric acid or hydrochloric acid but with a combination of both called aqua regia. Identify the reducing agent in the following equation: Au(s) + 4 H⁺ + NO₃^- + 4 Cl- → [AuCl₄]^- + 2 H₂O + NO(g)

• A) Au
• B) H⁺
• C) NO₃^-
• D) Cl-
• E) Au and Cl-

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