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QUESTION

# Write a balanced equation for the reaction of copper (II) hydroxide with aqueous ammonia to produce tetraamminecopper dihydroxide. Can you help plz?

Cu(OH)_2(s) + 4 NH_3(aq) -> [Cu(NH_3)_4] (OH)_2(aq)

The ionic equation looks like this:

Cu(OH)_2(s) + 4 NH_3(aq) -> [Cu(NH_3)_4]^(2+)(aq) + 2OH^(-)(aq)

Copper (II) hydroxied in ammonia solution is also known as Schweizer's reagent, a chemical used to dissolve cellulose.

[Cu(NH_3)_4]^(2+) is the tetraamminecopper (II) ion, a complex ion which I believe is also called cuprammonium ion.

Here's a video on some home-made Schweizer's reagent: