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Problem: Treatment of gold metal with BrF3 and KF produces Br2 and KAuF4, a salt of gold.Identify the reducing agent in this reaction.

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Recall the mnemonic for redox reactions:

Loss Electrons → Oxidation → Reducing Agent

Gain Electrons → Reduction → Oxidizing Agent


This means the element that gains electrons/reduced is the oxidizing agent while the element that loses electrons/oxidized is the reducing agent. 


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Problem Details

Treatment of gold metal with BrF3 and KF produces Br2 and KAuF4, a salt of gold.

Identify the reducing agent in this reaction.

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