#1
What is the name of the blue liquid stuff? It is Copper-something.


I should know but I have a memory blank.


Help please!!!

Thanks
#4
I don't think it's copper sulphate.


It is a blue liquid used in basic chemistry. It has copper in it.
#8
it's copper sulfate that contains water, copper sulfate without water has a white color
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#9
Quote by DimeDarrell666
it's copper sulfate that contains water, copper sulfate without water has a white color

Copper Sulfate without water is blue
#13
Quote by Guitar_God63
Copper Sulfate without water is blue

It can be either, it changes in different situations (though I can't remember what those situations are) but again, if you use google and type in 'white copper sulphate you see there is actually white CuSO4.
#14
Quote by Guitar_God63
Copper Sulfate without water is blue


Errrrrrrrr wrong. Anhydrous copper sulphate is white.

Hydrous copper sulphate is blue.

Threadstarter:

Copper complexes are generally blue so the copper compound you are thinking of is hydrous copper sulphate:

CuSO4.6H2O
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#15
Just because it's blue, you can't assume it's hydrated copper sulphate. IIRC copper chloride is a blue solution, too.
#17
Quote by chubbychunks
Just because it's blue, you can't assume it's hydrated copper sulphate. IIRC copper chloride is a blue solution, too.


I said "most copper complexes are blue" I covered myself. But generally, schools use hydrated copper sulphate a lot more than copper chloride.

Potassium pentaamminecuprate(II) chloride dihydrate is blue... It could be that.

Bisgylcinatocopper(II) chloride dihydrate is also blue... It could be that.

None of those would be used in schools... So the general deduction is copper sulphate (hydrous) because school syllabuses seem to only use it.
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Last edited by Guitardude19 at Mar 16, 2008,
#18
Quote by blynd_snyper
Yeah, but the compound most used in basic chemistry (which I'm assuming TS is in) is copper sulphate.

Oh and you realise it's against the rules to steal an avatar?

Yeah, maybe I should report her.

Gdude - I know what you mean. But copper chloride isn't that complex, it could be used in schools.
#19
its definately copper sulphate,
thats easy

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#20
Quote by Guitardude19
Errrrrrrrr wrong. Anhydrous copper sulphate is white.

Hydrous copper sulphate is blue.

Threadstarter:

Copper complexes are generally blue so the copper compound you are thinking of is hydrous copper sulphate:

CuSO4.6H2O

Just listen to this guy. However, I think it's .5H2O for the water of crystallisation.
#21
Quote by chubbychunks
Yeah, maybe I should report her.

Gdude - I know what you mean. But copper chloride isn't that complex, it could be used in schools.


Now you're just being a smart ass lol. In solution it is a complex... If it has water in its crystals its a hydrate... Copper Chloride anhydrous is white... Its hydrate is blue or green depending on the oxidation state of the copper (green in 2+ and blue in 1+ I think).

......Anywho since you use them in solution its better to refer to them as complexes.

Quote by muse_
Just listen to this guy. However, I think it's .5H2O for the water of crystallisation.


Yes it is penta hydrated, sorry typo lol

[Cu(H2O)5SO4 no charge on it.


Thanks for spotting that I cant believe I made that mistake lmao!


Edit:

Oops it depends. The crystal has 5 waters.... The complex has 6 waters so the complex in solution is: (I was thinking of the wrong thing... Duh)

[Cu(H2O)6]SO4

[Cu(H2O)5SO4 (Solid) ----> Put in water ----> [Cu(H2O)6]SO4
Sat in a lab, curing diseases. They actually LET me play with chemicals!
Last edited by Guitardude19 at Mar 16, 2008,
#23
Quote by chubbychunks
Gdude, I'm doing Chemistry at uni, you'd better be proud of me.


Of course I am.

Its the greatest subject on Earth! (Dont puss out and do biochemistry >_>
Sat in a lab, curing diseases. They actually LET me play with chemicals!
#25
Quote by Guitardude19
Of course I am.

Its the greatest subject on Earth! (Dont puss out and do biochemistry >_>

What am I, gay?
#26
This reminds me of my Alevel Chemisry *shiver* But yea, i did a whole two month nvestigation using this stuff. Its Copper (II) Suphate all complexed up in water.
#27
Quote by chubbychunks
What am I, gay?


Well, looks like you had me fooled then
Sat in a lab, curing diseases. They actually LET me play with chemicals!