#1
Ive been set this one about 2 reactions of copper oxide where you have to find which is correct.

Now we have a sneaky suspicion its bollocks and that this is just a past piece there making us do for practice.

Anyone done it before?
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#2
More detail please?
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#3
Doesn't sound familiar. What's the question?
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#4
Quote by happy-and-lost
Doesn't sound familiar. What's the question?


Thats another reason why i think its a joke, theres no question and its only planning

Which equation is correct?
Equation 1) 2CuCO2(S) ? ¬¬¬¬Cu2¬O(s) + 2CO2(g) + 1/2O2(g)
Equation 2) CuCo3(S) ? CuO(s) + CO2(g)
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#6
Quote by seljer
http://en.wikipedia.org/wiki/Copper_carbonate

Copper carbonate decomposes at high temperatures, giving off carbon dioxide and leaving copper(II) oxide.

CuCO3(s) ? CuO(s) + CO2(g)


It was kind of obivious considering the other had a 1/2 mole lol

Its planning so i have to more talk about scaling the chemicals down to fit the gas in a 100ml syringe
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#7
Quote by System Overide
It was kind of obivious considering the other had a 1/2 mole lol


Actually, that can be correct, butis just bad practise. Double every value and then no pesky halfs.
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#10
Also, it is unlikely you would get Cu2O, the oxidation state of copper would be unusual pretty straight forward stuff
#11
Quote by Tasman
Yeah since when do you get CuCO2?
You jsut spotted a typo that may have saved my grade thank you
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#12
Quote by Tasman
Well you would increase the pressure to fit into the syringe



Its easy to jsut scaled down the whole reaction. Ive divided by 750 on both equations that way if you get 80ml of gas its 1) and 24 its 2)
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#13
Just to add, this is due tomorrow and i had to blow off my band to finish this grrr.

Another question: where can i find chemical hazard infomation on the internet? like hazard cards
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#14
Quote by System Overide
Just to add, this is due tomorrow and i had to blow off my band to finish this grrr.

Another question: where can i find chemical hazard infomation on the internet? like hazard cards


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#15
Its kinda odd that i'm giving people advice on chemistry since i finished this yr wiht exactly 50% (yr 12)
#16
Lol i ment i had to cancel on them. I really need an A in chemistry lol
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#17
Quote by System Overide
Just to add, this is due tomorrow and i had to blow off my band to finish this grrr.

Another question: where can i find chemical hazard infomation on the internet? like hazard cards


http://ptcl.chem.ox.ac.uk/~hmc/hsci/chemicals/hsci_chemicals_list.html ?

really just hit it up on wikipedia and google and you should find some kind of information about any hazards