Magnesium single-displacement reactions

Magnesium exhibits single displacement reactions, thus replacing lower metals in electrochemical series from their salt solutions or melt. For example, magnesium will replace iron from molten iron(II) chloride forming magnesium chloride ... 

Single displacement reaction where magnesium is displacing hydrogen in the water molecule. 

Most single displacement reactions involve one metal displacing another metal from a compound. In the following equation, magnesium metal replaces the zinc in ZnCl2, thereby liberating zinc as the free metal. 

Some of the reactions you attempt may fail because the substances are not reactive or because the proper conditions for reaction are not present. For example, mer-cuiy(II) oxide does not decompose until it is heated magnesium does not bum in air or oxygen until the temperature reaches a certain point. When silver is placed in a solution of copper(II) sulfate, no reaction occurs. When copper wire is placed in a solution of silver nitrate, a single-displacement reaction takes place because copper is a more reactive metal than silver. (See Figure 8.1.)... 

Single Displacement Reaction in this single-displacement reaction, the hydrogen in hydrochloric acid, HCI, is replaced by magnesium, Mg. 

One example of a single displacement reaction is when magnesinm replaces hydrogen in water to make magnesium hydroxide and hydrogen gas ... 

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