The purpose of Smelting an ore is to________?
Correct answer: A. Reduce it
- A. Reduce it
- B. Oxidize it
- C. Obtain an alloy
- D. Separate volatile impurities
Explanation
Smelting uses heat and a reducing agent to convert a concentrated metal oxide into the free metal, so its main purpose is reduction. The likely mistake is choosing oxidation, which may occur during roasting before smelting but is not the principal purpose of smelting itself.
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About Redox Reactions
Redox reactions involve oxidation and reduction occurring together, with electrons transferred between species or oxidation numbers changing. The topic covers assigning oxidation states, identifying oxidizing and reducing agents, balancing redox equations by oxidation number or half-reaction methods, and connecting chemical changes with galvanic and electrolytic cells.
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