Question

The procedure and explanation to separate copper powder from a mixture containing copper and zinc powders

Answer 1

Answer: I think that the best economic method is by burning the mixture in an electrical furnace to temperature 640 degree C to melt both Zinc & Aluminium leaving copper oxide as Powder .

Answer 2

The procedure and explanation to separate copper powder from a mixture containing copper and zinc powders :

• So, for separate them we must know their individual properties .

• Therefore, based on the colour they can be separated as they have different colours i.e copper metal is red while zinc is grey in colour.

• Other method to separate them is by treating with acid .As the zinc have more reducing character and lies about the hydrogen in reactivity series so it will reduce the acid while copper do not react at all.

• Zn(s) + 2 HCl (aq.) –> ZnCl2(aq) + H2(g).