The net ionic equation excludes the spectator ions. In this reaction, the net ionic equation is; Cu^2+(aq) + 2OH^+(aq) ----> Cu(OH)2(s)
First we give the molecular reaction equation as follows;
2KOH(aq) + Cu(NO₃)₂(aq) ------> 2K(NO₃)₂(aq) + Cu(OH)2(s)
Next is the complete ionic equation;
2K^+(aq) + 2OH^+(aq) + Cu^2+(aq) + 2NO₃^-(aq) ----> 2K^+(aq) + 2NO₃^-(aq) + Cu(OH)2(s)
Finally the net ionic equation;
Cu^2+(aq) + 2OH^+(aq) ----> Cu(OH)2(s)
Note that the net ionic equation excludes the spectator ions. The spectator ions occur on both sides of the ionic equation. We can see that potassium and nitrate ions are spectator ions.
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