Need Help With Identifying My Precipitate, .

[justinh8]

Hi, i need some help on how to identify,
I mixed Copper Sulfate solution with Sodium Hydroxide solution to produce solid Copper Hydroxide and aqueous Sodium Sulfate. I than filtered out the aqueous sodium sulfate and was left with solid copper hydroxide. My teacher than asked me to verify that my solid was Copper hydroxide. How can i verify that my solid is Copper Hydroxide?
Please explain and help, Thanks!

 

[dacruick]

Is it pale blue when dry?

if its wet it will react with water and form copper hydroxide which is black.

(I grabbed this from wikipedia)

 

[Borek]

Drying it won't be easy, I guess you have just a solution containing blue precipitate.

Check what happens when you add an ammonia solution. Check what happens when you add a strong acid solution.