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A single-displacement reaction, also called single-replacement reaction, is when one element appears to move out of one compound and into another.(One element is replaced by another in a compound.) This is usually written as Wikipedia does not have an article with this exact name. ... A Single replacement reaction(also known as compostion reaction) is when one element replaces another element in a compound. ...

A + BX → AX + B or A + BX → AB + X

This will occur if A is more reactive than B. You can refer to the reactivity series to be sure of this. Vapours of hydrogen chloride in a beaker and ammonia in a test tube meet to form a cloud of a new substance, ammonium chloride A chemical reaction is a process that results in the interconversion of chemical substances. ... In chemistry, the reactivity series is a series of metals, in order of reactivity from highest to lowest. ...

A and c must either be different metals (hydrogen's behavior as a cation renders it as a metal here), in which case X represents an anion. However, A and B may also be halogens, in which case X represents a cation. In either case, when AX and BX are aqueous compounds (which is usually the case), X is a spectator ion. A cation is an ion with positive charge. ... An anion is an ion with negative charge. ... The halogens or halogen elements are a series of nonmetal elements from Group 17 (old-style: VII or VIIA; Group 7 IUPAC Style) of the periodic table, comprising fluorine, F, chlorine, Cl, bromine, Br, iodine, I, and astatine, At. ... A spectator ion is an ion that exists as a reactant and a product in a chemical equation. ...

Due to the free state nature of A and B, all single displacement reactions are also oxidation-reduction reactions. When A and B are metals, A is always oxidized and B is always reduced. Since halogens prefer to gain electrons, A is reduced (from a 0 to −1) and B is oxidized (from −1 to 0) when A and B represent those elements.

A and B may not have the same charge when ions are formed therefore some balancing of the equation may be necessary. For example the reaction between silver nitrate (AgNO₃) and zinc (Zn) forms silver (Ag) and zinc nitrate (Zn(NO₃)₂). R-phrases , S-phrases , , , , Flash point non-flammable Supplementary data page Structure and properties n, εr, etc. ... General Name, Symbol, Number zinc, Zn, 30 Chemical series transition metals Group, Period, Block 12, 4, d Appearance bluish pale gray Standard atomic weight 65. ... General Name, Symbol, Number silver, Ag, 47 Chemical series transition metals Group, Period, Block 11, 5, d Appearance lustrous white metal Standard atomic weight 107. ... Zinc nitrate (Zn(NO3)2) is a chemical compound used as a mordant in dyeing. ...

2AgNO_3(aq) + Zn_(s) → 2Ag_(s) + Zn(NO₃)_2(aq)

All simple metal with acid reactions are single displacement reactions. For example the reaction between magnesium (Mg) and hydrochloric acid (HCl) forms magnesium chloride (MgCl₂) and hydrogen (H₂). General Name, Symbol, Number magnesium, Mg, 12 Chemical series alkaline earth metals Group, Period, Block 2, 3, s Appearance silvery white solid at room temp Standard atomic weight 24. ... The chemical compound hydrochloric acid is the aqueous (water-based) solution of hydrogen chloride gas (HCl). ... Magnesium chloride is composed of magnesium and chlorine and is a typical ionic halide, being highly polar and soluble in water. ... General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ...

Mg_(s) + 2HCl_(aq) → MgCl_2(aq) + H_2(g)