Essential Chemistry for IGCSE - Metals And Reactivity (Section 5 - No. 20)
What is the role of carbon in reducing copper(II) oxide?
It acts as a catalyst.
It removes the oxygen from the copper(II) oxide.
It prevents the copper from reacting with the air.
It increases the melting point.
Explanation
Carbon is a reducing agent, meaning it takes away oxygen from other substances.
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