It has been suggested that this article or section be merged into base (chemistry). (Discuss)

A strong base is a basic chemical compound that is able to deprotonate very weak acids in an acid-base reaction. The strength of a base is indicated by its pK_b value, compounds with a pK_b of more than about 13 are called strong bases. Common examples of strong bases are the hydroxides of alkali metals and alkaline earth metals like NaOH and Ca(OH)₂. In water strong bases form hydroxyl ions (OH^-), either by complete dissociation through solvation (metal hydroxides) or by chemical reaction with water (e.g. NaH and LDA). In chemistry, a weak base is a chemical base that does not ionize fully in an aqueous solution. ... It has been suggested that strong base be merged into this article or section. ... A chemical compound is a chemical substance formed from two or more elements, with a fixed ratio determining the composition. ... Deprotonation is a chemistry term that refers to the removal of a proton (hydrogen ion H+) from a molecule, forming the conjugate base. ... A weak acid is an acid that does not fully ionize in solution; that is, if the acid was represented by the general formula HA, then in aqueous solution a significant amount of undissolved HA still remains. ... An acid-base reaction is a chemical reaction between an acid and a base. ... In chemistry and biochemistry, acid dissociation constant, the acidity constant, or the acid-ionization constant (Ka) is a specific type of equilibrium constant that indicates the extent of dissociation of hydrogen ions from an acid(I.E how well it splits H+ Ions). ... Hydroxide is a polyatomic ion consisting of oxygen and hydrogen: OH− It has a charge of −1. ... The alkali metals are the series of elements in Group 1 (IUPAC style) of the periodic table (excluding hydrogen in all but one rare circumstance): lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr). ... The alkaline earth metals are the series of elements in Group 2 (IUPAC style) of the periodic table: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) and radium (Ra) (not always considered due to its radioactivity and very short half-life). ... Flash point Non-flammable. ... Calcium hydroxide Calcium hydroxide is a chemical compound with the chemical formula Ca(OH)2. ... Water has the chemical formula H2O, meaning that one molecule of water is composed of two hydrogen atoms and one oxygen atom. ... Hydroxide is a polyatomic ion consisting of oxygen and hydrogen: OH− It has a charge of −1. ... Solvation is the attraction and association of molecules of a solvent with molecules or ions of a solute. ... A chemical reaction is a process that results in the interconversion of chemical substances [1]. The substance or substances initially involved in a chemical reaction are called reactants. ... Sodium hydride is a highly flammable, and corrosive chemical compound with formula NaH and CAS number 7646-69-7. ... Lithium diisopropylamide (LDA), is a strong base, widely used in organic chemistry for the generation of carbanions. ...

The general reaction of a base with water is:

A^-_(aq) + H₂O_(l) ↔ HA_(aq) + OH^-_(aq)

Very strong bases are even able to deprotonate very weakly acidic C-H groups in the absence of water.

Common examples

Strong bases

(Strongest to weakest)

• Potassium hydroxide (KOH)
• Barium hydroxide (Ba(OH)₂)
• Cesium hydroxide (CsOH)
• Sodium hydroxide (NaOH)
• Strontium hydroxide (Sr(OH)₂)
• Calcium hydroxide (Ca(OH)₂)
• Lithium hydroxide (LiOH)
• Rubidium hydroxide (RbOH)

Basically, the cations of these strong bases appear in the 1st and 2nd groups of the Periodic Table (Alkali and Alkali-Earth Metals). R-phrases , S-phrases , , , Flash point non flammable RTECS number TT2100000 Supplementary data page Structure and properties n, εr, etc. ... Barium hydroxide is a basic chemical compound, with the chemical formula Ba(OH)2. ... Caesium hydroxide, (CsOH) is a chemical compound consisting of an atom of caesium and a hydroxide group (also known as hydroxyl). ... Flash point Non-flammable. ... // Preparation Uses Used chiefly in the refining of beet sugar. ... Calcium hydroxide Calcium hydroxide is a chemical compound with the chemical formula Ca(OH)2. ... Lithium hydroxide (LiOH) is a corrosive alkali. ... The common (Arrhenius) definition of a base is a chemical compound that either donates hydroxide ions or absorbs hydrogen ions when dissolved in water. ...

Very Strong Bases

• Sodium hydride (NaH)
• Lithium diisopropylamide (LDA) (C6H14LiN)
• Sodium amide (NaNH₂)

Sodium hydride is a highly flammable, and corrosive chemical compound with formula NaH and CAS number 7646-69-7. ... Lithium diisopropylamide (LDA), is a strong base, widely used in organic chemistry for the generation of carbanions. ... Sodium amide, also called sodamide, is a flammable powder with chemical formula NaNH2. ...

See also

• Acid-base reaction theories
• Base
• Acid

An acid-base reaction is a chemical reaction between an acid and a base. ... It has been suggested that strong base be merged into this article or section. ... It has been suggested that strong acid be merged into this article or section. ...

External links