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Limestone reacting with acid

K004/2698

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Credit

RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY

Caption

Sample of limestone rock reacting with hydrochloric acid. Limestone is a mineral formed of calcium carbonate (CaCO3), which is slightly soluble in water but more so in acid. In this reaction, the limestone reacts with the acid to produce calcium chloride and carbon dioxide gas, which bubbles off. The calcium chloride produced is very soluble in water, and acid can thus speed the dissolution of limestone. Limestones make up around 10% of all the sedimentary rocks on Earth, and limestone landscapes under the influence of slightly acidic rain are commonly riddled with caves and holes, producing what is termed karst topography.

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Downloadable Master

  • Duration: 00:00:31.17
  • Audio: Yes
  • Format: Photo - JPEG
  • Frame Rate: 25.000

Original

  • Capture Format: Sony FS700
  • Codec: H.264
  • Interlaced: No
  • Frame Size: 1920 x 1080

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