How would you expect the reaction of aluminum or copper with oxygen to be different from that of sodium
Answers
Answer:
Sodium is a very strong reductant and reacts with O2 in air spontaneously, forming a white oxide coating almost as soon as a fresh surface is exposed to air. Aluminum also reacts with the oxygen in air, though more slowly than sodium. It’s rapid enough that if you want to preserve an unoxidized surface of freshly exposed Al metal, you have to coat it with something. Often, carbon is used, especially when Al is being ground fine or processed in some way that increases surface area. The oxide coating on Al protects the remaining metal from further oxidation. Copper reacts very slowly with oxygen. In the atmosphere, carbon dioxide and sulfur oxides react more rapidly than oxygen, which is why exposed copper turns green with age, not red or black like the oxides of copper. Copper needs to be heated if you want to produce copper oxides in a matter of seconds or minutes.
Answer:
the reaction of aluminium and copper guis 10 tons of reaction