Chemistry · Acids, Bases and Salts
Marble statues undergo corrosion, staining, and degradation when they repeatedly come into contact with polluted rainwater (acid rain). Identify the main chemical reason behind this phenomenon.
- 1Calcium carbonate readily dissolves in neutral water to yield calcium hydroxide.
- 2Polluted rainwater is acidic due to dissolved oxides and reacts with calcium carbonate.✓
- 3Polluted water is basic in nature, hence it reacts chemically with calcium carbonate.
- 4Thermal decomposition of calcium carbonate into calcium oxide.
Correct answer
Polluted rainwater is acidic due to dissolved oxides and reacts with calcium carbonate.
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