We’re being asked to identify the oxidizing agent in the given reaction:
Au + BrF3 + KF → Br2 + KAuF4
To do so, we need to identify the change in oxidation state for each element in the reaction.
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.
Treatment of gold metal with BrF3 and KF produces Br2 and KAuF4, a salt of gold.
Identify the oxidizing agent in this reaction.
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What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Redox Reactions concept. You can view video lessons to learn Redox Reactions. Or if you need more Redox Reactions practice, you can also practice Redox Reactions practice problems.
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