The reaction between sodium and water can be represented by the following chemical equation:
2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)
In this equation:
- Na(s) represents solid sodium.
- H2O(l) represents liquid water.
- NaOH(aq) represents sodium hydroxide, which is formed as a product of the reaction and dissolves in water to form a basic solution.
- H2(g) represents hydrogen gas, which is also a product of the reaction and is released as a gas.
During the reaction, the sodium atoms in the metal rapidly lose their outermost electron to become positively charged sodium ions (Na+). These sodium ions are attracted to the negatively charged oxygen atoms in the water molecules, forming chemical bonds and resulting in the formation of sodium hydroxide (NaOH).
At the same time, the hydrogen atoms in the water molecules gain the electrons lost by sodium, becoming neutral hydrogen atoms. These hydrogen atoms then combine to form hydrogen gas (H2), which is released as bubbles into the surrounding atmosphere.
The sodium-water reaction is highly exothermic, meaning that it releases a significant amount of heat. The liberated heat can cause the water to boil rapidly and generate steam. The reaction can also be accompanied by flames and sparks due to the high temperature and the release of hydrogen gas, which is flammable.
Due to its highly reactive nature, sodium must be handled with caution, especially in the presence of water. It is important to store sodium in a dry environment and avoid direct contact with water to prevent the occurrence of a potentially dangerous reaction.
