I am trying to dissolve copper(I) iodide and copper(I) thiocyanate in ammonia. I am quite sure that they both dissolve in liquid ammonia, and are insoluble in ethanol.

If I were to purchase a 2.0M solution of ammonia in ethanol, like the one here, would the CuI and CuSCN still dissolve in the ammonia solution?

Also, are there any other solvents that you know of for these materials?

  • $\begingroup$ AFAIK, $\ce{CuI}$ is soluble in pyridine and aqueous potassium/sodium iodides. $\endgroup$ – permeakra Jul 31 '14 at 4:51

The reason these salts are soluble in ammonia (including aqueous ammonia -- so why buy ammonia in EtOH?) is that they form complexes with ammonia: $$ \ce{CuI}\text{(s)}+2\ce{NH3}\text{(aq)}\to\ce{Cu(NH3)_2^+}\text{(aq)}+\ce{I-}\text{(aq)}.$$ Have fun!

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