Definition: The word "alkalinity" comes from Greek, which means "saltiness," and refers to an increase in water's solubility in saltwater. In other words, it describes how much salt a solution contains per unit volume. Definition: Alkalinity is a term used in chemistry that describes the tendency of salt solutions to become soluble in water. It is measured in terms of the number of ions (cations and anions) in the solution that are capable of being dissolved. The amount of solubility present determines how much of the original solution can dissolve into it. For example, if a 100-g sample of sodium chloride, or NaCl, was mixed with water to form a solution at a temperature of 37°C (98°F), and then the solution's salt content was measured as 6 moles of Na+ ions for every mole of Cl- ions, it could be concluded that the solution is "alkalinity saturated." The term alkalinization describes changes in the solubility of salts in aqueous solutions. In other words, alkali refers to salt solutions with a high concentration of sodium and chloride ions. The process involves the dissolution or precipitation of the sodium or chloride ion from its solid state and then the formation of soluble salts. For example, if one were to mix a 10-g sample of calcium hydroxide (Ca(OH)2) in water at room temperature, which is 37°C (98°F), it would precipitate out a large amount of sodium hydroxide, NaOH. The concentration of sodium and chloride ions decreases due to the dissolution process. In summary, alkalinization refers to changes in solubility of salts in aqueous solutions that are often associated with conditions such as temperature, pH (pH), or presence of other substances like chemicals or enzymes.

alkalinisation