Gold Does Not React with Either Nitric Acid or Hydrochloric

question 104

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⁺(aq) + NO₃^-(aq) + 4 Cl^-(aq) → [AuCl₄]^-(aq) + 2 H₂O(l) + NO(g)

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

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