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equilibrium ion unit
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República Bolivariana de Venezuelaministerio del poder popular para la educación
Instituto universitario politécnico “Santiago Mariño”Mérida - estado Mérida
Michelle Contreras MI.C 25727233
chemical EngineeringSchool 49
By convention, when working with acidic species, the equilibrium constant for this species is called acidity constant and Ka is
designated; and when working with a basic species, the equilibrium constant is called basicity constant Kb
expressing the ion balance
is a special type of chemical equilibrium, characterized by the
presence of chemical species in aqueous solution, which produce
species which produce ions in solution are known electrolytes
loads
classifying the properties of aqueous solutions
Their physical properties depend on its concentration.
Its components are separated by phase changes such as melting, evaporation, condensation, etc.
The amount of solute and the amount of solvent in proportions varying between certain limits.
identify the different acid-base theories
Theory of Acids and Bases Svante Arrhenius
He defined acids and chemicals that contain hydrogen, dissolved in water and produce a
concentration of hydrogen ions or protons, greater
than that in pure water.
Theory of Acids and Bases Bronsted - Lowry
Definitions Bronsted - Lowry are
A Bronsted acid - Lowry is a proton donor, for donating a hydrogen ion, H +
A Bronsted basis - Lowry is a proton, then accepts a hydrogen ion, H
the definitions for acids and bases are:
A Lewis acid is a substance capable of accepting (and share) an electron pair.
A Lewis acid is a substance capable of donating (and share) an electron pair.
Theory of Acids and Bases Gilbert
Newton Lewis
consider determining the difference in pH and the strength of an electrolyte
Solutes which when dissolved in water forms a solution that conducts electricity. Electrolytes in turn can be strong
when fully dissociated, and weak when they are
partially ionized.
Example: Hydrochloric acid, HCl is a strong
electrolyte.
Acetic acid, CH3COOH, is a weak electrolyte.
The pH of a solution is, therefore, a measure of
hydrogen ion concentration in said solution