Chemistry 0620 · IGCSE · Corrosion of metals

Corrosion of metals — practice question

Which word equation shows the rusting of iron?

  • Airon + oxygen + water $\rightarrow$ anhydrous iron(II) hydroxide
  • Biron + oxygen $\rightarrow$ hydrated iron(II) oxide
  • Ciron + oxygen + water $\rightarrow$ anhydrous iron(III) hydroxide
  • Diron + oxygen + water $\rightarrow$ hydrated iron(III) oxide

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