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Single replacement reaction!

1st period
by

Gavin Moore

on 30 April 2014

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Transcript of Single replacement reaction!

Single Replacement Chemical Reaction *
Definition :
A single replacement reaction, also known as single displacement reaction, is when an element is substituted for another. This is the general equation for Single Replacement Chemical Reactions:
A+BC ----> AC+B
A single replacement reaction will only take place of another if a more reactive element is replacing a less reactive one.



Examples:
A lot of chemical reactions typically produce electrical energy, many reactions used to refine ores are single displacement. A single reaction is easy to predict and control. That is the reason why the chemical and refining industries rely on single reactions.
Coal miners also rely on single replacement chemical reactions, due to the explosives they use.

Another example occurred in the Statue of Liberty. The outer layers of the statue are made of copper, but the inner support was made of steel. When the copper started to react with air, forming a verdigris coating, a single replacement reaction caused the iron to convert the copper back to copper metal; the iron started to rust, and the entire inner support had to be replaced in the 1980s.
Real life example :
In ancient China, copper was first discovered around 475 BCE. Two hundred years later, methods of producing copper became more advanced. One of the methods is using iron to replace copper from a copper sulfate solution:
CuO + H2SO4 ---> CuSO4 + H2O

CuSO4 + Fe --->Cu+ FeSO4

Sources :
http://en.wikipedia.org/wiki/Single_displacement_reaction
http://chemwiki.ucdavis.edu/Inorganic_Chemistry/Reactions_in_Aqueous_Solutions/Precipitation_Reactions
http://www.slideshare.net/martykilroy/single-double-replacement-reactions
http://honorsph.startlogic.com/honorsphysicalscience/chemical_reaction_types.htm
In this reaction, hydrogen is replaced by magnesium:
Mg + HCl --> MgCl2 + H2
A single replacement reaction consists of a solid being added to a solution.




Industries that use Single Replacement
To help explain :
Enviromental concerns

Mostly effected by metals in aqueous
solutions.
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