Limestone Reacts with Acid

Limestone Reacts with Acid

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Credit: Turtle Rock Scientific/SCIENCE PHOTO LIBRARY


Caption: Limestone reacts with acid. Limestone a sedimentary rock that contains various forms of calcium carbonate (CaCO3). Here a piece of limestone is dropped into a beaker with 0.2 M hydrochloric acid (HCl). Carbon dioxide (CO2) bubbles are produced: CaCO3 + HCl -> CaCl2 + H2O + CO2. This is the mechanism by which acid rain erodes structures made of limestone.

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Keywords: acid, beaker, bubbles, caco3, calcium carbonate, carbon dioxide, carbonate, chemical, chemistry, co2, hcl, hydrochloric acid, limestone, reacting, reaction, sedimentary

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