Talk:Copper oxychloride

copper(II) sulfate

Dissolve it in water.

Filter

Dump in a stoichiometric amount of potassium carbonate or baking soda with a little bit of sodium hydroxide

Filter

Add HCl to it slowly until gas evolution ceases.

add a large piece of copper wire coiled up and boil the solution.

Remove the copper wire

dump the solution over cracked ice.

copper(I) chloride will crash out

Filter and dry.

let it sit in air, it will darken and become copper oxychloride.

Adding HCl to copper wire won't dissolve it without help of another acid or something else, like hydrogen peroxide