Camroc37 - 13-9-2015 at 17:35
I make copper nitrate using Ammonium Nitrate and Copper Carbonate. Will the above method also work?
gdflp - 13-9-2015 at 18:05
No, it will not. Basic copper carbonate, Cu2(OH)<sub>2</sub>CO<sub>3</sub>, will not react with a
solution of potassium nitrate, the equilibrium is unfavorable. The only reason that the reaction with ammonium nitrate works is that a competing
reaction, namely the decomposition of ammonium carbonate, is largely irreversible, thus the equilibrium is shifted towards favoring copper nitrate.
In the future, ask questions like this in The Short Questions Thread.
PHILOU Zrealone - 15-9-2015 at 05:25
NH4NO3 (NH4(+) in fact) is mildly acidic...
As such it favors the formation of gaseous volatile ammonia and H2CO3 (H2O + CO2)...
Many equilibrii at work...
Cu(OH)2 <==--> Cu(2+) + 2 OH(-)
CuCO3 <==--> Cu(2+) + CO3(2-)
NH4NO3 ---> NH4(+) + NO3(-)
NH4(+) + OH(-) <==--> NH3(g) + H2O
2 NH4(+) + CO3(2-) <--> 2 NH3(g) + H2O + CO2(g)
4 NH3 + Cu(2+) <--==> Cu(NH3)4(2+)
Cu(2+) + 2 NO3(-) <--> Cu(NO3)2
Cu(NH3)4(2+) + 2 NO3(-) <--> Cu(NH3)4(NO3)2
Cu(NH3)4(NO3)2 <==--> Cu(NO3)2 + 4 NH3(g)