A white solid at room temperature, sodium hydroxide is an inorganic compound that is often found as a white solid at high temperatures. This chemical molecule is composed of the cations sodium (Na+) and the anions hydroxide (OH). Sodium hydroxide is represented by the chemical formula NaOH. It is known as caustic soda or Iye in certain circles, and it is widely used in the production of a variety of products, including paper, soap and detergents, pulp, explosives, and liquid drain and oven cleansers, among other things.
For this reason, it is usually generated by mixing a chemical with water, rather than the other way around as is common practice. This inorganic compound is used as a buffering agent in cosmetics and other personal care products. It also has the power to adjust the pH levels in the environment. The pH value of sodium hydroxide is 13.
Sodium Hydroxide is one of the most fundamental hydroxides that may be found. A result of these characteristics, it is widely employed to determine the pH scale in combination with neutral water and (acidic) HCl acid, among other things. We’ll study more about Sodium Hydroxide in the sections that follow, including its characteristics and preparation.
Sodium Hydroxide Structure
The sodium hydroxide symbol is made up of a sodium cation and a hydroxyl anion, as seen in the diagram. The following is the structure of sodium hydroxide:
It is entirely possible for sodium to transmit a single electron from its outer shell to the oxygen present in the hydroxyl group. It is due to the fact that sodium contains one more proton than it does electrons that it has a positive charge. Upon accepting one electron in its outer shell, the oxygen in the hydroxyl gains the ability to conduct negative charge. Overall, the sodium hydroxide charge is neutralised by the water.
Formula for Sodium Hydroxide
Sodium hydroxide, also known as caustic soda and lye in the commercial world, is an extremely powerful inorganic base. The ingredients that contribute to the formation of sodium hydroxide must first be considered in order to derive the chemical formula for sodium hydroxide. Sodium hydroxide is made up of three molecules: sodium, oxygen, and hydrogen, which combine to form the compound. Hydroxide is the oxygen-hydrogen anion OH-, which stands for oxygen-hydrogen anion. This chemical is ionic because it is made up of the sodium cation Na+and the hydroxyl anion OH-OH-, which are both positively charged. As a result, the formula for sodium hydroxide is NaOH. Some reactions involve:-
NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
4 Fe + 6 NaOH → 2 Fe2O3 + 6 Na + 3 H2
2NaOH + SO2 → Na2SO3 + H2O
The crystallographic structure
In the presence of water, NaOH and its monohydrate crystallise into orthorhombic crystals with the space groups Cmcm (oS8) and Pbca (oP24). A = 1.1825, b = 0.6213, and c = 0.6069 nm are the dimensions of the monohydrate cell, whereas It has a hydrargillite-like layer structure with the elements /O Na O O O/ and /O Na O/.. Each sodium atom is surrounded by six oxygen atoms, three from hydroxyl anions HO and three from water molecules, with three oxygen atoms from hydroxyl anions HO and three from water molecules. Within each O layer, the hydrogen atoms of the hydroxyls create strong connections with the oxygen atoms of the surrounding water molecules. Hybrid connections formed by water molecules between adjacent O layers hold them together in place.
NaOH Uses (Sodium Hydroxide)
1.It is used as a component in drain cleaners.
2.It is commonly used in the food preservation and canning processes.
3.It reacts with chlorine to form chlorine bleach, which is comparable to bleach.
4.It is used by the municipal wastewater treatment plant to remove heavy metals from the water.
5.It is used in the manufacturing of soaps and detergents.
6.It is used as a preservative in foods to keep germs and mould at bay.
7.It is used in the manufacture and recycling of paper.
Conclusion
Sodium hydroxide is an ionic compound that contains both sodium ions and hydroxide ions. Because of the hydroxide ion, sodium hydroxide is a strong base that interacts with acids to generate water and the equivalent salts, such as sodium chloride with hydrochloric acid: HCl(aq) + NaOH(aq) + H2O ( l).