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===Method===
#Add roughly 40ml of 1.0[[MolarMolarity|M]] [[Sulphuric Acid]] to a 100ml [[beaker]].
#Heat the [[acid]] to 90°C.
#Use a [[spatula]] to add a small amount of [[Copper (II) Oxide]] powder to the [[solution]] and stir with a [[Glass Rod|glass rod]].