The reaction between an acid and a base is known as neutrilization reaction. In this reaction, both acid and base cancel each other’s effect. Neuralization reaction results in the formation of salt and water. During this reaction, energy in the form of heat is evolved.
Acid + Base ➝ Salt + water + Heat
For example, when sodium hydroxide (NaOH) is added, to hydrochlaric acid (HCl), sodium chloride. (Nacl) and water (H2O) are obtained.
NaOH + HCL ➝ Nacl + H2O + Water.