Celebrate With Chemistry

Chemistry is the study of matter and the changes that take place with that matter.

Friday, August 11, 2006

Metals - Displacement Reaction

One application of The Reactivity Series of metals is to be able to predict the displacement power of a metal.
the simple rule that apples is:

[any metal above amother in the reactivity series is capable of displacing it from an aquesous solution of its salt (and its oxide)]

For example, if iron fillings were slowly added, with stirring, to a solution of copper (II) sulphate, its blue colouration would fade and the solution would become light green.


this is because the copper has been 'pushed out' and left as a pink copper metal,
while the iron has 'gone into' the solution as green iron (II) sulphate.

also, in displacement reactions, the powder form is used as it has a greater surface area making reaction faster. =)


in short,

-The Reactivity Series is a list of metals with the most reactive metal on top, and the least reactive below.

-reactive metals form ions easily and react violently with cold water and dilute acids.

-a displacement reaction is when a more reactive metal displaces a less reactive metal from a solution of its salt.
eg. iron fillings displace copper when added to a copper (II) sulphate solution.

chill-

2 Comments:

At 7:29 PM, Blogger Jayson Perera said...

great work buddy keep it up

 
At 7:29 PM, Blogger Jayson Perera said...

great work buddy keep it up

 

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