The chemicals in acid rain errodes or dissolves the building material. (eats away at it.)
acid chemicals
acid rain decomposes limestone (calcium carbonate), causing houses and buildings made out of them to become worn
chemical weathering by acid rain.
If the stone is marble or limestone - and many statues are - acid rain will slowly but surely eat away at it - a kind of slow-motion "dissolving", as it were. It is very real, and a very serious problem.
limestone statues fall apart because it is very fragile when exposed to acid rain. No matter how rare it occurs, acid rain can cause a lot cracks and crevices to form. Later, when water freezes in the cracks, ice wedging can cause the statue to just fall apart too.
It wears the structure down to nothing. Particularly those made of limestone.
Acid rain is acidic. It has a low Ph. coaquina and other forms of limestone are alkaline. When the two combine there is a chemical reaction which will dissolve the limestone. The acid and the limestone will form a compound which is generically called a salt (probably calcium sulphate or calcium chloride). The amount of salt form will be dependent upon the acidity of the acid rain.
It affects the environment we all live in, it destroys limestone, which means it destroys the buildings that are made out of limestone.
Limestone is composed of calcium carbonate, an alkaline substance that breaks down on contact with acid. Granite is composed primarily of silica and feldspar, which are not so basic and do not react with acid.
Acid in the rainwater causes limestone to dissolve, leaving open spaces, or caves.
You can't prevent acid rain through the choice of stones used in statues. But you can influence the rate of damage done to the statues through choice of stone. Soft stones, marble, sandstone, limestone take damage early. Hard stones, like granite lasts longer.
It can fall anywhere but you shouldn't be worried because acid rain has no immediate affects on people but it does on plants and limestone rocks or statues like the 2 statues of liberty. There is one statue in France and one in the U.S both are greenish color because of pollution.