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1. What is a balanced chemical equation?
Why should chemical equations be balanced?
Why should chemical equations be balanced?
A chemical equation is a representation of a in the form of components. A balanced chemical equation is one in which the number of atoms in all of the is equal on both sides. The balancing of a chemical equation is governed by the .
Corrosion is the progressive of metals by the action of air, moisture or a chemical reaction (such as an acid) on their surface is called corrosion.
Example:
When is exposed to moist air for an extended period, its surface acquires a coating of a , flaky substance called rust. Rust is mainly hydrated iron (III) oxide.
When is exposed to moist air for an extended period, its surface acquires a coating of a , flaky substance called rust. Rust is mainly hydrated iron (III) oxide.
4Fe + 3O_2 + 2xH_2O → 2Fe_2O_3.xH_2O
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