Which is most affected by acid rain? WHY?

Question

Which of the following is most affected by "Acid Rain" ???
Briefly Explain

Cu, Fe or Al

Answer 1

Acid rain is caused by the accumulation of Carbon Dioxide in the atmosphere. Neither do these metal contribute to acid rains however they themselves have individual ways of contributing to the atmosphere.

First of all, Copper is used for making jewelry and kitchen ware, however it itself is a toxic metal, there are many people who die from copper poisoning but i don't think it contributes to acid rains.

Secondly, Fe or Iron is a useful metal. But its weakness is the instantaneous conversion from Fe 2+ tp Fe 3+ (also know as corrosion or rusting) this process would require the surrounding to be wet and have oxygen. The waste product however cannot be CO2 as carbon does not take in the process of corrosion. This process undergoes Reduction. Hence, the gain of 1 electron

Aluminium is essential in our daily lives because it is one metal used to combine with other stronger metals such as steel to make airplane parts. I would say that Aluminium contributes the most to Acid Rains because of the production of Aluminium itself. It is done via the Heroult & Hall process. This requires molten alumina Al2O3 and undergo electrolysis with a Carbon anode and a Carbon cathode. The reaction for this process is:
2Al2O3 + 3C -> 4Al + 3 CO2 (in cryolite a catalyst!)
therefore it is shown that the end product is Aluminium liquid (later hardened) and Carbon Dioxide gas!

Answer 2

I would say Fe, just because iron oxidizes (rust) with O_2_ and water (even water with pH<7) will also have that affect on Fe. Al might also be the other candidate because Al is such a fragile metal->if you look on the periodic table, Al is near the gases, meaning it is a reactive and soft metal.

Answer 3

If you're talking about metal structures, iron. It's more reactive than copper. Aluminium is even more reactive, but it's protected by an oxide layer. But if you're talking about making minerals in the soil available for uptake by plants, then aluminium. But as far as I know, iron and copper are plant trace nutrients and aluminium isn't important for plant nutrition.

Answer 4

it should be SO2 or SO3

but, between 3 of them , I`ll say it is Fe,