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Ammonium dichromate volcano

K004/1957

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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. This clip is also available with the chemical equation for the reaction overlaid. See clip K004 3413.

Release details

Model release not required. Property release not required.

Clip Properties:

  • Duration: 00:01:19.05
  • Audio: Yes
  • Interlaced: No
  • Capture Format: Sony FS700
  • Codec: H.264

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