Qualitative analysis

Celluhh

I'm just learning the basics, but I have a few questions.
Why is it that there is no precipitate formed when calcium ions react with aqueous ammonia?
Why is it that copper ions reactwith A little aqueous ammonia to form copper hydroxide precipitatinput dissolves in excess aqueous ammonia to form a solution???
All help will be greatly appreciated thank you !

sgstudent

Aqueous ammonia partially dissociate into NH4+ and OH- ions. So any calcium hydroxide formed will be a minute amount hence, it is able to dissolve in water leaving no precipitate. Copper (ii) hydroxide continues to react with the solution to form a deep blue solution.

Borek

Do you know what solubility product is? If so, compare solubility products of calcium hydroxide and copper hydroxide - which one is more soluble? Which one is easier to precipitate out of the solution?

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Celluhh	Qualitative analysis Tweet I'm just learning the basics, but I have a few questions. Why is it that there is no precipitate formed when calcium ions react with aqueous ammonia? Why is it that copper ions reactwith A little aqueous ammonia to form copper hydroxide precipitatinput dissolves in excess aqueous ammonia to form a solution??? All help will be greatly appreciated thank you !

sgstudent	Aqueous ammonia partially dissociate into NH4+ and OH- ions. So any calcium hydroxide formed will be a minute amount hence, it is able to dissolve in water leaving no precipitate. Copper (ii) hydroxide continues to react with the solution to form a deep blue solution.

Borek Admin	Do you know what solubility product is? If so, compare solubility products of calcium hydroxide and copper hydroxide - which one is more soluble? Which one is easier to precipitate out of the solution?