Question

Q.1 When an iron combines with the oxygen in the air, it becomes rusty. Is rusting a reversible or
irreversible change? Explain your answer.​

Answer 1

Answer:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities.

Answer 2

Answer:

It reacts with moist air to form a new compound called rust with molecular formula Fe2O3. nH2O. This oxide layer, rust is not stable and falls off after certain time. Thus rusting of iron is irreversible change i.e. Rust once formed can not be converted back into iron.

Explanation:

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