Copper Nitrate plus water

[ktpr2]

Does Copper(I) Nitrate plus water { Cu(NO)3)2 (aq) + H20 } yeild Cu(NO3)2 3H20? (unbalanced)

From what I've been told, it could equal Cu(H2O)6^+2(aq) but I don't see the NO3 anywhere.

[dextercioby]

Does Copper(I) Nitrate plus water { Cu(NO)3)2 (aq) + H20 } yeild Cu(NO3)2 3H20? (unbalanced)

Do you see anything devious in the underlined part...?

From what I've been told, it could equal Cu(H2O)6^+2(aq) but I don't see the NO3 anywhere.

What is that...??

Daniel.

[ktpr2]

Devious? Uh, Copper(I) has a postive charge, the anion NO3 has a negative charge; so it really must be Copper(II), to balance the molecule. Okay. Now you add water, h2o so all these elements have to show up on the product side. Since Cu(NO3)2 is balanced I have to ask myself if 3H2O is balanced. H is +, so 6+ goes with O which is 2-, 6-. So it looks pretty balanced.

I'll read ahead here. Water is is an extremely weak electrolyte. And ions dissolve in water well so it looks possible. What am I missing here?

[dextercioby]

Devious? Uh, Copper(I) has a postive charge, the anion NO3 has a negative charge; so it really must be Copper(II), to balance the molecule. Okay.

How would the chemical bonds be realized in
Cu_{2}(NO_{3})_{2}

compared to the regular
CuNO_{3}

??


Daniel.

[ktpr2]

Metal+nonmetal = ion; must be charge neutral

Cu_{2}(NO_{3})_{2}; (NO_{3})_{2} has charge of -1, so that's -2 overall, and since we have two atoms of Cu, it must be normal copper with a charge of -1.

I'm not sure "how the bond would be realized"; by charge forces :)?

[dextercioby]

BETWEEN WHOM?? CuNO_{3} is ELECTRICALLY NEUTRAL... :wink:

Daniel.

[ktpr2]

I guess it would have be a molecular bond of some kind. I profess ignorance as I'm just reading ahead for class.

[dextercioby]

I strongly doubt it.I would advise you to use the Cu(I) nitrate,viz. CuNO_{3} :smile:

Daniel.

[ktpr2]

okay wait I don't have a choice of what kind of copper nitrate I can use. Cu(NO_3)_2_(aq_) + H_2O is all i get. I just wanted to know what kind of product it would make. Thanks for your elucidation though

[dextercioby]

Well Cu(NO_{3})_{2} \ _{aq.} would mean Cu (II),right...?And why would the problem speak about Cu(I)??Is there some redox that i cannot/don't see??? :confused:

Daniel.

[Gokul43201]

The complex you get is the copper (II) hexaquo complex.

Cu(NO_3)_2 + 6H_2O \longrightarrow Cu(H_2O)_6^{2+} + 2NO_3^-

[dextercioby]

Thanks,Gokul.I knew a clear mind would settle it. :wink:

So it was Copper (II) all the time... :rolleyes:

Daniel.