ketchup - the vinegar ( acetic acid ) in ketchup changes the copper oxide to copper acetate which is soluable in water.
You let copper soak in vinegar and salt for 20 minutes and dry them throughly
The Zinc metal is oxidized, while the Copper ion is reduced. The reverse reaction, the oxidation of Copper and the reduction of Zinc ion, is not spontaneous.
Copper oxidation is endothermic.
+2 oxidation state for the Copper. -1 for the Chloride
It is not possible to reverse engineer copper. Copper is a basic element.
oxidation
+2 for Copper
sooch pulla
yes
Five: 0 (elementary), +1, +2, +3, +4
+1 for copper in CuI or Cu2I2.
+2 oxidation state
It has 3 main oxidation numbers.They are zero +1 and +2.