[spetsacdc]

Hello, I am supposed to draw the particle view for the copper cycle for a chem lab. I can't find any info on google or my book about what they want when they say a particle view.

I have figured out what the copper cycle is, but idk how to draw it's particle view for the rxns in it.

Thanks

[LQ43]

I know this assignment well

do you know how to draw particles of Cu as a solid?
how ions would look if they were in an aqueous solution?
how an ionic compound would look if it were insoluble inwater?

have a look at this for a start http://www.chem.iastate.edu/group/Greenbowe/sections/projectfolder/flashfiles/thermochem/solutionSalt.html

start with a balanced equation for each part of the cycle.

think about what state of matter each compound is in and whether it is ionic or molecular.

ask again if you have more questions

[spetsacdc]

Thanks for the tips 

I guess at how to draw it, but I'm pretty sure it is wrong.

I drew 4 reactions.

My 1st is Cu as a solid plus HNO3 liquid

I drew the Cu as a lot of tiny closely packed dots because it is a solid. Then the HNO3 I drew spaced out. The product Cu(NO3)2 is copper dissolved in NO3

So I drew the Cu particles in between the NO3 and wrote (cu dissolved in n03)

2nd rxn:

Cu(NO3)2 + NaOH = Cu(OH)2

I drew Cu(OH)2 as a liquid on top and a precipitate on bottom

3rd rxn:

Cu(OH)2 + H2SO4

I drew Cu dissolved in SO4 just like step 1

4th rxn:

I drew the CuSO4 + Zn (solid) to give the original densly packed Cu alone.



Thanks for your help. I'm pretty sure my method is wrong though

[LQ43]

rxn 1

Cu sounds good,

the HNO3 is a strong acid as an aqueous solution - so is dissociated in solution H separate from NO3

Cu btwn NO3 sounds good - charges on these?

rxn 2

what do you mean by liquid on top - what liquid on top? and ppt on the bottom,

what would Cu(OH)2 look like as a ppt?

rxn 3

sounds good

rxn 4

look at this to help you http://www.chem.iastate.edu/group/Greenbowe/sections/projectfolder/animations/ZnCutransfer.html

I don't know how much detail your teacher wants but try to draw all of the atoms as particles, don't use the formulas so much ,
 that is don't just write NO3- , at least put a circle around it,
if you can draw its Lewis structure, all the better

[spetsacdc]

Like I have the reactions written down, but for this particle view I should write the charges in the circles?

For rxn 2, I HAD put it as I saw it after we centrifuged it (solid on bottom). But this isn't accurate. So I guess I can just draw the solid pieces like floating throughout the liquid circles.

I'm not sure what Cu(OH)2 looks like as a ppt...maybe blue or something.

Thanks again.

[LQ43]

no its okay to put the Cu(OH)2 on the bottom, it would eventually settle to the bottom without being centrifuged, I just didn't know if you meant liquid Cu(OH)2 on the top (which was not correct)

think of Na+ Cl-, put circles around each of those, draw a few more, where would the next Na+ go? beside the first Na+ or beside the Cl-? - lattice structure (go back to see the first animation about the NaCl solid dissolving in water)

now for Cu(OH)2 what is the charge on Cu? draw that like the Na+ (but make it the Cu version)

what is the charge on OH? put it where the Cl- would be in the lattice

all this  goes on the bottom,


yes charges are very important, it shows that you know what is ionic -