What is observed on the corrosion of Fe,Cu,an | vedclass

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Question

(A) The corrosion of metals involves the oxidation of the metal surface when exposed to atmospheric conditions.$1$. For $Fe$ (Iron),it reacts with oxy

Vedclass · Accepted Answer

$Fe$ forms a reddish-brown coating,$Cu$ forms a green coating,and $Ag$ forms a black coating.

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(A) The corrosion of metals involves the oxidation of the metal surface when exposed to atmospheric conditions.$1$. For $Fe$ (Iron),it reacts with oxygen and moisture to form hydrated iron$(III)$ oxide,$Fe_2O_3 \cdot xH_2O$,which is a reddish-brown substance known as rust.$2$. For $Cu$ (Copper),it reacts with atmospheric $CO_2$ and moisture to form a basic copper carbonate,$CuCO_3 \cdot Cu(OH)_2$,which appears as a green coating.$3$. For $Ag$ (Silver),it reacts with atmospheric sulfur compounds (like $H_2S$) to form silver sulfide,$Ag_2S$,which appears as a black coating.

What is observed on the corrosion of $Fe$,$Cu$,and $Ag$ metals?

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