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Ammonium dichromate volcano

K004/1953

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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

Ammonium dichromate volcano demonstration. Ammonium dichromate is a salt that decomposes in an exothermic reaction when ignited. The decomposition produces a large volume of dark green chromium (III) oxide, along with steam and nitrogen gas. The equation for the reaction is: (NH4)2Cr2O7 --> Cr2O3 + N2 + 4H2O.

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Downloadable Master

  • Duration: 00:01:22.05
  • Audio: No
  • Format: Photo - JPEG

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  • Capture Format: Sony FS700
  • Codec: H.264
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  • Frame Size: 1920 x 1080

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