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Question:

What is the difference between ZnO and Zn(OH)2???

We all know that Fe(OH)2 and Fe(OH)3 forms as an oxide layer after rustingbut what happens when Zn gets rusting?does it form the oxide layer: ZnO or Zn(OH)2 and what is the difference?

Answer:

Rusting from water and air so Zn(OH)2 formsThis is zinc hydroxide, it is not an oxide ZnO is the oxide that coats zinc when it is exposed in airIt appears in most reactive metals like aluminiumif you remove the AlO3 coating from the foil it creates heat as it reacts with the air.
Potassium Aluminum Hydroxide

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