Name the compounds formed when Fe, Cu, Ag and Al get corroded
Answers
Iron forms Fe2O3.xH2O
Copper forms CuO and Cu2O
Aluminium forms Al2O3
Silver forms unstable oxide film...but gets tarnished due to formation of Ag2S...
Hope it helps
Answer:
Refined metals are changed by corrosion into more stable compounds such as metal oxides, metal sulfides, and metal hydroxides. The interaction of air moisture and oxygen with iron results in the formation of iron oxides.
Explanation:
The compound formed from the corrosion of iron (Fe) is a hydrated ferric oxide (Fe₂O₃.xH₂O). The reaction is as follows below.
Fe (s) + H₂S (g) → Ag₂S (s)
The compound formed from the corrosion of iron (Cu) is copper carbonate [Cu(OH)₂.CuCO₃]. The reaction is as follows below.
Cu (s) + H₂O (g) + O₂ (g) + CO₂ (g) → [Cu(OH)₂.CuCO₃]
The compound formed from the corrosion of iron (Ag) is silver sulfide (AgS). The reaction is as follows below.
Ag (s) + H₂S (g) → Ag₂S (s)
The compound formed from the corrosion of iron (Al) is aluminum oxide (Al₂O₃).
3O₂ (g) + 4Al (s) → 2Al₂O₃ (s)
Hence, the name of the compounds formed from the corrosion of iron, copper, silver, and aluminum is mentioned above.
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