The chemical formula for sodium hydroxide is NaOH. Let's break it down to understand its composition:
- Na represents the chemical symbol for sodium, which is an alkali metal with atomic number 11.
- OH represents the hydroxide ion, composed of one oxygen atom (O) bonded to one hydrogen atom (H). The hydroxide ion carries a charge of -1.
When sodium combines with the hydroxide ion, they form an ionic compound called sodium hydroxide. In this compound, the sodium ion (Na+) has a +1 charge, while the hydroxide ion (OH-) has a -1 charge. The charges balance each other out, resulting in a neutral compound.
Sodium hydroxide is commonly encountered as a white solid or a concentrated solution. It is highly soluble in water and is known for its strong alkaline properties. It is widely used in various industries and laboratory settings, including as a strong base, pH adjuster, or chemical reagent. It is commonly known as caustic soda and is used in processes such as soap and detergent manufacturing, water treatment, and in the production of various chemicals.