50.1 MB (6.1 MB compressed)
3419 x 5117 pixels
29.0 x 43.4 cm ⏐ 11.4 x 17.1 in (300dpi)
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.
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