[KanaLS]

Order from greatest to least the amount of Cu 2+ (aq) that would be present?
Order from greatest to least the amount of Cu2+ (aq) that would be present at equilibrium CuCO3, 1 M Cu(NH3)4 2+, saturated CuS, 1 M CuCl2 given these facts.

(a) Mixing CuCl2 and Na2CO3 solutions will yield a precipitate of CuCO3.
(b) Passing H2S gas into Cu(NH3)4 2+ solution will precipitate Cus.
(c) CuCO3 solid will dissolve in NH3 solution to form a deep blue solution.

[ooosh]

Try to rank the capacity of seizing Cu, the easier to seize a Cu2+ the harder to release it.

[KanaLS]

Try to rank the capacity of seizing Cu, the easier to seize a Cu2+ the harder to release it.

And I take it that the easier to capture Cu means it has less Cu 2+?

[ooosh]

And I take it that the easier to capture Cu means it has less Cu 2+?

yes.

[KanaLS]

And I take it that the easier to capture Cu means it has less Cu 2+?

yes.

Umm, I got Cu(NH3)3 2+, CuCl2, CuCO3. and CuS.

What do you think?

[ooosh]

(c) CuCO3 solid will dissolve in NH3 solution to form a deep blue solution.

What information can you get from (c)? Try to rank CuCO3 and Cu(NH3)3 2+.