Question

observe the following picture and answer the following questions​

Answer 1

Answer:

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Explanation:

1. A reddish layer develops on any metal due to moisture in air..
2. The chemical formula of rust is Fe2O3.H20
3. Fe ->Fe²+ 2e–
4. O2+4H +4e- ->2H20
5. Decaying of metal due to moisture in air is called corrosion.
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Answer 2

Answer:

Explanation:

1)  A reddish- or yellowish-brown flaking coating of iron oxide that is formed on iron or steel by oxidation, especially in the presence of moisture.

2)Fe2O3

The chemical formula for rust is Fe2O3. Rust is formed when iron reacts with oxygen in moist air. The following chemical equation represents the reaction: 4Fe + 3O2 → 2Fe2O3. Water is necessary for the oxidation reaction to occur and to facilitate transport of the electrons.

3) at cathode:

O2(g)+4H+(aq)+4e−→2H2O(l)

4) at anode:

Fe(s)→Fe2+(aq)+2e−

5)Corrosion is a galvanic process by which metals deteriorate through oxidation—usually but not always to their oxides.