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Strong base

From Academic Kids

Acids and Bases:
Acid-base reaction theories
pH
Self-ionization of water
Buffer solutions
Systematic naming
Redox reactions
Electrochemistry
Strong acids
Weak acids
Strong bases
Weak bases

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 pKb value, compounds with a pKb of less than about 1 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).

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.

Contents

Common examples

Medium strong bases

Strong bases

Very strong bases

See also

External links

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