Ionization Constant

Definition - What does Ionization Constant mean?

An ionization constant (using the symbol K) is a constant that depends upon the equilibrium between ions and molecules that are not ionized in a solution or liquid. It is the ratio of products and reactants raised to appropriate stoichiometric powers or the ratio between the product of concentration and reactant. Any imbalance in the equation can lead to corrosion.

An ionization constant is also known as a dissociation constant.

Corrosionpedia explains Ionization Constant

In a reaction, during the equilibrium state, the backward and forward reaction rates are identical. It is the equilibrium constant for a chemical reaction known as dissociation in the context of acid-base reactions. For instance, the result of concentrations may vary. This is because the concentration indicates how much substance has disconnected. With this, concentration ratios can be related in order to give a constant.

Therefore, there is more acid, and fewer ions. The pH of a substance indicates how basic or acidic something is depending on the degree of ion dissociation. K is a way of relating concentration in order to discover other calculations, typically the pH of a substance. For instance, in order to prevent system corrosion, it is necessary to reduce the concentration of acidic contaminants in the water. Thus, water acidity can be reduced by means of various external treatment methods.

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