Introduction and Purpose In this experiment, we completed a series of chemical reactions to demonstrate the properties of pure copper and compounds derived from copper. A sample of 0.04 grams of copper was put in a test tube to undergo five different chemical reactions including decomposition, single-displacement and double-displacement. The first reaction consists of adding 40 drops of nitric acid to the copper sample. In second reaction, 6 moles of NaOH was added to the copper nitrate to produce Cu(NO3)2 and then centrifuged, with balanced test tubes, to separate the solid, or precipitate, of the solution and the liquid, or the supernatant. Cu(OH)2 was then heated, in reaction three, to make CuO. In reaction 4, 40 drops of 6 moles of sulfuric acid were added to the solid CuO to dissolve copper oxide and produce copper sulfate. Lastly in reaction 5, 0.2 cm2 of aluminum foil, as well as four drops of 6 moles of HCl, were added in small portions until the aluminum had reacted with copper ion to produce copper metal. Theory and Principles …show more content…
Copper is mainly used due to its better resistance in corrosion than other metals and its unwillingly nonreaction with most strong acids. To investigate and identify the nature of the reactions of copper, one can synthesize copper into a series of chemical reactions and explore its physical and chemical properties. The pure substance undergoing the chemical reaction, in this instant copper, takes on different chemical reactions. There are four types of chemical reactions: combination or synthesis reactions, decomposition reactions, substitution or single replacement