Does addition of HCl favour, or disfavour, formation of tetraamminecopper(II)? [closed]








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Which way does the equilibrium


$$\ce{[Cu(H2O)4]^2+(aq) + 4 NH3(aq) <=> [Cu(NH3)4]^2+ (aq) + 4 H2O (l)}$$


shift if HCl is added to the system?


When I did this experiment, I found that the original solution was rather cloudy, but adding HCl made it clear. I suspect that it was moving towards the more soluble side of the reaction, but I can't find the solubilities of the copper compounds. 




HCl reacts with ammonia and removes it from the equilibrium above:


$$\ce{HCl + NH3 <=> NH4+ + Cl-}$$


therefore the equilibrium will shift to the left.


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