MAKING A COPPER HYDROXIDE PRECIPITATE.wmv

[pip101]

Avoid using the NaOH...

The electrolysis of a copper anode in water will make copper hydroxide. It will also be more pure as it wont have Na salt impurities.

Also, its more of a suspension than a precipitate.

[PubliosValesios]

@pip101 IGood morning Pip, I don't agree with what you said because producing copper hydroxide by electrolysis is not advantageous. At first you will need a deep knowledge of electrolysis laws to produce exactly the copper hydroxide that you need. These laws are not so easy like this simple reaction. Then you will get also copper oxide by electrolysis as a product of the decomposition of copper hydroxide. And you can avoid Na impurities by washing the hydroxide with distilled water.Greetings

[toothpick93]

can you crystilise the sodium sulfate just by heating it or evaporating it?

[PubliosValesios]

@toothpick93 yes, you can get sodium by evaporating it or boiling it. By evaporation you will get fine cristals

[Lexnd]

how would u dry out the copper hydroxide ?? is it pure?? would u be able tomake it pure and dry?

[PubliosValesios]

@Lexnd Sorry if I answer just now...however you usually have to prepare copper hydroxide at the moment you need for a certain reaction. Under nine degrees celsius infact it decomposes into cupric oxide CuO (black coloured). If you perform the experiment with very cold solution and you filtrate fast the hydroxide you can put it into freezer and store there it (but some water is however present)

[ignilc]

actually at the end there was more cuo than hydroxide, you used too concentrated solutions

[PubliosValesios]

@ignilc s, you're right after I uploaded un you tube the video an experienced chemist explained to me that if you perform the experiment at room temperature the copper hydroxide decomposes in Cuo. Infact you should perform all that using some ice to keep the solution cold

[kyuubidemon7]

cool, thanks!

[hobomnky]

thnx that was helpful