Question

Chemically rust is: (a) Hydrated ferrous oxide (b) Hydrated ferric oxide (c) Only ferric oxide (d) None of these

Answer 1

Answer: The correct answer is Option c.

Explanation:

Rust is defined as the brown-colored compound which is formed when iron reacts with air in the presence of moisture. The formation of rust is a chemical process.

The chemical reaction for the formation of rust follows the equation:

$4Fe(s)+3O_2(g)\rightarrow 2Fe_2O_3(s)$

By Stoichiometry of the reaction:

4 moles of iron metal reacts with 3 moles of oxygen gas to produce 2 moles of Iron (III) oxide.

Thus, the correct answer is Option c.

Answer 2

option C is your answer