Marble Reacts with Acid

Marble Reacts with Acid

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Credit: Turtle Rock Scientific/SCIENCE PHOTO LIBRARY


Caption: Marble reacts with acid. Marble a metamorphic rock that contains calcium carbonate (CaCO3) and other carbonate minerals. Here a piece of marble is dropped into a beaker with 0.2 M hydrochloric acid (HCl). Carbon dioxide (CO2) bubbles are produced: CaCO3 + HCl -> CaCl2 + H2O + CO2 (similar reactions for other carbonates). This is the mechanism by which acid rain erodes marble statues and structures.

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

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