Question

Write a balanced chemical equation for the given reaction and also classify them: Iron $\left(\mathrm{III}\right)$ oxide on heating with carbon monoxide gas reacts to form solid iron and liberates carbon dioxide gas.

Answer 1

Balanced chemical equation:

• A balanced chemical equation is an equation where the number of atoms in the reactant and the product side should be an equal number.
• It can be balanced by using coefficients in front of reactant or product species..

Chemical Reaction:

• Iron $\left(\mathrm{III}\right)$ oxide reacts with carbon monoxide to form solid iron and carbon dioxide gas as follows:

${\mathrm{Fe}}_2{\mathrm{O}}_3\left(\mathrm{s}\right)+3\mathrm{CO}\left(\mathrm{g}\right)\to 2\mathrm{Fe}\left(\mathrm{s}\right)+3{\mathrm{CO}}_2\left(\mathrm{g}\right)$

• The above reaction is an example of a redox reaction because both the removal and addition of hydrogen and oxygen happen.

Redox reaction:

• A redox reaction is a chemical process that involves the exchange of electrons between two reactants. This electron transfer can be identified by changes in the oxidation states of the reacting species.
• Redox is a combination of oxidation and reduction reactions.