TURTLE ROCK SCIENTIFIC / SCIENCE PHOTO LIBRARY TURTLE ROCK SCIENTIFIC / SCIENCE PHOTO LIBRARY
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.
Model release not required. Property release not required.