Single Displacement Reactions

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Presentation transcript:

Single Displacement Reactions A single displacement reaction involves an element and compound as reactants. + + A B C B AC compound single element In deciding which element is replaced (displaced),we use the general rule of metal replacing metal and non-metal replacing non-metal.

It then switches places with the metal in the compound Mg 2 NaCl + MgCl2 + 2 Na Is the element a metal or non-metal? A metal This is an example of a single displacement reaction with a metal displacing a metal.

It then switches places with the non-metal in the compound Br2 CaI2 + CaBr2 + I2 Is the element a metal or non-metal? A non-metal This is an example of a single displacement reaction with a non-metal displacing a non-metal.

+ Mg + 2 Ag NO3 2 Ag Mg(NO3)2

Double Displacement Reactions A double displacement reaction involves a compound and compound as reactants. + + AB CD AD CB compound compound In general, the metals switch positions in a double displacement reaction.

Pb(NO3)2 + 2 KI PbI2 + 2 KNO3 Metal switches spots with the other metal. This is an example of a double displacement reaction with a metal displacing a metal.