38 relations: Acid dissociation constant, Acid strength, Alkaline earth metal, Aqueous solution, Atacama Desert, Ball-and-stick model, Calcium carbonate, Carcinogen, Chemical equilibrium, Chemical reaction, Chromate conversion coating, Chrome plating, Chrome yellow, Chromic acid, Chromite, Chromium, Chromium(VI) oxide peroxide, Covalent bond, Crocoite, Ether, Heavy metals, Hexavalent chromium, Hydrogen peroxide, Lanthanide, Oxidation state, Oxidizing agent, Oxyanion, Peroxide, PH, Potassium chromate, Potassium dichromate, Predominance diagram, Pyridine, Redox, Reduction potential, Restriction of Hazardous Substances Directive, Sodium carbonate, Solution.
An acid dissociation constant, Ka, (also known as acidity constant, or acid-ionization constant) is a quantitative measure of the strength of an acid in solution.
The strength of an acid refers to its ability or tendency to lose a proton (H+).
The alkaline earth metals are six chemical elements in group 2 of the periodic table.
An aqueous solution is a solution in which the solvent is water.
The Atacama Desert (Desierto de Atacama) is a plateau in South America (primarily in Chile), covering a 1000-km (600-mi) strip of land on the Pacific coast, west of the Andes mountains.
In chemistry, the ball-and-stick model is a molecular model of a chemical substance which is to display both the three-dimensional position of the atoms and the bonds between them.
Calcium carbonate is a chemical compound with the formula CaCO3.
A carcinogen is any substance, radionuclide, or radiation that promotes carcinogenesis, the formation of cancer.
In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.
A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.
Chromate conversion coating is a type of conversion coating used to passivate steel, aluminium, zinc, cadmium, copper, silver, magnesium, and tin alloys.
Chrome plating (less commonly chromium plating), often referred to simply as chrome, is a technique of electroplating a thin layer of chromium onto a metal object.
Chrome yellow is lead(II) chromate (PbCrO4).
The term chromic acid is usually used for a mixture made by adding concentrated sulfuric acid to a dichromate, which may contain a variety of compounds, including solid chromium trioxide.
Chromite is an iron chromium oxide: FeCr2O4.
Chromium is a chemical element with symbol Cr and atomic number 24.
Chromium(VI) peroxide (CrO5) or chromium oxide peroxide is an unstable compound formed by the addition of acidified hydrogen peroxide solutions to solutions of metal chromates or dichromates, such as sodium chromate or potassium dichromate.
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.
Crocoite is a mineral consisting of lead chromate, PbCrO4, and crystallizing in the monoclinic crystal system.
Ethers are a class of organic compounds that contain an ether group—an oxygen atom connected to two alkyl or aryl groups.
Heavy metals are generally defined as metals with relatively high densities, atomic weights, or atomic numbers.
Hexavalent chromium (chromium(VI), Cr(VI), chromium 6) is any chemical compound that contains the element chromium in the +6 oxidation state (thus hexavalent).
Hydrogen peroxide is a chemical compound with the formula.
The lanthanide or lanthanoid series of chemical elements comprises the 15 metallic chemical elements with atomic numbers 57 through 71, from lanthanum through lutetium.
The oxidation state, sometimes referred to as oxidation number, describes degree of oxidation (loss of electrons) of an atom in a chemical compound.
In chemistry, an oxidizing agent (oxidant, oxidizer) is a substance that has the ability to oxidize other substances — in other words to cause them to lose electrons.
An oxyanion, or oxoanion, is an ion with the generic formula (where A represents a chemical element and O represents an oxygen atom).
Peroxide is a compound with the structure R-O-O-R. The O−O group in a peroxide is called the peroxide group or peroxo group.
In chemistry, pH is a logarithmic scale used to specify the acidity or basicity of an aqueous solution.
Potassium chromate is the inorganic compound with the formula (K2CrO4).
Potassium dichromate, K2Cr2O7, is a common inorganic chemical reagent, most commonly used as an oxidizing agent in various laboratory and industrial applications. As with all hexavalent chromium compounds, it is acutely and chronically harmful to health. It is a crystalline ionic solid with a very bright, red-orange color. The salt is popular in the laboratory because it is not deliquescent, in contrast to the more industrially relevant salt sodium dichromate.Gerd Anger, Jost Halstenberg, Klaus Hochgeschwender, Christoph Scherhag, Ulrich Korallus, Herbert Knopf, Peter Schmidt, Manfred Ohlinger, "Chromium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2005.
A predominance diagram purports to show the conditions of concentration and pH where a chemical species has the highest concentration in solutions in which there are multiple acid-base equilibria.
Pyridine is a basic heterocyclic organic compound with the chemical formula C5H5N.
Redox (short for reduction–oxidation reaction) (pronunciation: or) is a chemical reaction in which the oxidation states of atoms are changed.
Reduction potential (also known as redox potential, oxidation / reduction potential, ORP, pE, ε, or E_) is a measure of the tendency of a chemical species to acquire electrons and thereby be reduced.
The Restriction of Hazardous Substances Directive 2002/95/EC, (RoHS 1), short for Directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment, was adopted in February 2003 by the European Union.
Sodium carbonate, Na2CO3, (also known as washing soda, soda ash and soda crystals, and in the monohydrate form as crystal carbonate) is the water-soluble sodium salt of carbonic acid.
In chemistry, a solution is a special type of homogeneous mixture composed of two or more substances.
Bichromate, Chromate, Chromate Mineral, Chromate and Dichromate, Chromate ion, Chromates, Cobalt (II) chromate, Cr2O7, Cr2o7, Cr3O10, Cr4O13, CrO4, Dichromate, Dichromate ion, Monochromate, Monochromate ion, Tetrachromate, Tetrachromate ion, Trichromate, Trichromate ion.