Is aluminium a metal or metalloid? - Chemistry Stack Exchange
Aluminium is usually considered to be a metal, as described in the Wikipedia article Metalloids: Aluminium: Aluminium is ordinarily classified as a metal. It is lustrous, malleable and ductile, …
How does aluminium react with bases to form aluminates?
2016年5月1日 · It is able to coordinate the aluminium cations in the oxide/hydroxide, turning them into aluminates $\ce{[Al(OH)4]-}$ which can dissolve in water. This destroys the passivation …
Chemical Reaction of aluminum foil in CuCl2 solution
2018年9月30日 · Now, for the experiment discussed with Al/CuCl2, I suspect elemental copper metal, especially freshly precipitated, will similarly react forming a coating of cuprous oxide per …
Why is Aluminium oxide amphoteric? - Chemistry Stack Exchange
2019年11月28日 · Metal hydroxides are basic in water. Non-metal oxides are acids in water. The limit between metals and non-metals is a sort of staircase going through the periodic table …
Is aluminium foil pure aluminium? - Chemistry Stack Exchange
2020年1月11日 · Pure aluminium is covered in a tough but very thin layer of aluminium oxide which will protect the bulk metal from further reaction with air or water unless the protective …
Spontaneity and nature of attack of fluorine gas on aluminum
2021年4月13日 · I have studied reactions of halogens on aluminium, but it had no information about fluorine's attack, and I would like to know about this reaction. Aluminium has a tenacious …
Metal Compounds that bond covalently - Chemistry Stack Exchange
2014年9月13日 · Such molecules with metal-metal bonds do exist. Let's start with the most clear (and, admittedly, least chemically significant) example: group one metal diatomic molecules. …
experimental chemistry - Differentiation between zinc, aluminium, …
2015年5月15日 · The aluminium ion will react with the ammonia solution to form aluminium hydroxide which is white. So, you see white precipitate. $$\ce{Al^3+ + 3NH3 + 3H2O <=> …
Why can't Al3+ be reduced to solid, pure aluminum?
2015年11月5日 · So the aluminium oxide is reduced via the Hall–Héroult process. The alumina itself is produced from mined bauxite via the Bayer process. So the gist is that industry spends …
electrochemistry - Bubble formation when aluminium reacts with …
If the $\ce{CuSO4}$ solution is acidic enough, the $\ce{Al(OH)3}$ rapidly dissolves, exposing a fresh aluminium surface, ready for further reaction. On the other hand, the redox reaction of …