Chemical Separation (1 Viewer)

[BowTrUcKle]

Hey,

Could someone please explain to me electrolysis and thermal decomposition...?

All help would be appreciated..

Thanks

 

[Xayma]

Electrolysis is where electricity is used to provide the energy to break atomic bonds. An example of this is the electrolysis of Water which follows the following equation:
2H_20(l)--Electricity--->2H_2(g)+O_2(g)

Thermal decomposition is where heat is used to break the atomic bonds, an example is copper Carbonate represented by:
CuCO_3(s)----Heat---->CuO(s)+CO_2(g)

 

[BowTrUcKle]

Thanks Xayma

 

[Xayma]

Originally posted by BowTrUcKle
Thanks Xayma

Anytime Bowtruckle.

 

[kimmeh]

thermal decomposition involes usually a solid compound ie. copper carbonate
and electrolsysi usually involves water and liquids

yup yup one uses electricty and the other uses heat

 

[kimmeh]

hmm i just read somwhere:

combustion:
+ there is no electron transfer
+ significant energy loss (through heat)

electrolysis:
+ there is electron transfer
+negligible energy loss

 

[abdooooo!!!]

Originally posted by kimmeh
combustion:
+ there is no electron transfer
+ significant energy loss (through heat)

electrolysis:
+ there is electron transfer
+negligible energy loss

helloooo!!! kim!!!

+ combustion: a chemical change, especially oxidation, accompanied by the production of heat and light.

+ oxidation: a reaction in which the atoms in an element lose electrons and the valence of the element is correspondingly increased.

+ electrolysis: chemical change, especially decomposition, produced in an electrolyte by an electric current.

+ decomposition: separation into constituents by chemical reaction.

note: definitions are provided by dictionary.com

 

[kimmeh]

Originally posted by abdooooo!!!
helloooo!!! kim!!!

hellow abdooooooo
yeah, i kind of ressurected this thread.. but i couldnt help but to add the electron stuff

my extra contributions were from my chem teacher random teacher quotes are hitting me in the holidays..