CH-1745

Oxidising and reducing agents

Chemistry · Secondary 4 · Medium · Oxidising and reducing agents

Iron(III) oxide,

\text{Fe}_2\text{O}_3

, formed when iron powder burns can be converted back to iron using carbon monoxide,

\text{CO}

. Which balanced equation represents this reduction correctly?

$\text{Fe}_2\text{O}_3 + 3\text{CO} \to 2\text{Fe} + 3\text{CO}_2$
$\text{Fe}_2\text{O}_3 + \text{CO}_2 \to 2\text{Fe} + 3\text{CO}$
$2\text{Fe}_2\text{O}_3 + 3\text{CO} \to 4\text{Fe} + \text{CO}_2$
$\text{Fe}_2\text{O}_3 \to 2\text{Fe} + 3\text{O}_2$

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