Question

Rusting of iron is a ____ chemical change.

Answer 1

The appropriate response in the given blank is Irreversible chemical change.

• Chemical alterations are classified according to whether the original product can be recovered using a reverse chemical recation process.
• The chemical shift that occurs when iron rusts are irreversible.
• It is a chemical reaction that occurs when iron (Fe) reacts with oxygen in the atmosphere.
• Because iron is more reactive to oxygen, it develops a rust layer as a result of the interaction.
• This rust could never revert to its former iron state.
• As a result, the chemical alteration is irreversible.

Answer 2

Answer:

Rusting of iron is a irreversible chemical change.

Explanation:

• Iron rusts as a result of a chemical reaction. When it comes into contact with damp air, it forms rust (molecular formula $Fe_2O_3.nH_2O$.
• Rust is an oxide layer that is unstable and peels off after a period of time.
• Thus, rusting of iron is an irreversible alteration, i.e., rust cannot be turned back into iron once it has developed.