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20 Nov 2021

Given information

Here in this question, we have been given Magnesium metal and asked if it could be coated on iron to prevent it from corrosion.

Step-by-step explanation

Step 1.

The process of wasting away of the metal layer by layer due to the attack of the atmospheric gases resulting in the formation of compounds such as oxides, sulphates, sulphides, carbonates, etc is called corrosion.

Iron starts weathering up as soon as it is exposed to air and moisture. The process of corrosion of iron is called rusting. Chemically rust is a hydrated oxide of iron having the formula   .  

Let us now have a look at the mechanism of corrosion of Iron.

Rusting is a redox process by which iron is oxidized by oxygen in the presence of moisture. It involves 4 steps. 

STEP 1: The water vapour present on the Iron surface has dissolved    and   from the air.

   

 

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