Question

When NH3(aq) is added to Cu2 (aq), a precipitate initially forms. Its formula is:


a. Cu(NH)3

b. Cu(NO3)2

c. Cu(OH)2

d. Cu(NH3)22

e. CuO

Answer 1

It’s B the cu looses its 2 and passes it to the NH3 that needs a bracket to separate them. The NH3 doesn’t loose its 3 because it’s already a compound!
Hope this helps!