A miniature volcano occurs when (NH4)2Cr2O7 is decomposed!
This mini volcano is analagous to a cinder/spatter cone.
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Video for Windows |
Quicktime |
Ammonium dichromate, (NH4)2Cr2O7, is an orange crystalline solid at room temperature. It can be ignited with high heat, such as that from a bunsen burner. |
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Video for Windows |
Quicktime |
The orange (NH4)2Cr2O7 is decomposed according to the equation below:
| (NH4)2Cr2O7(s) ----> Cr2O3(s) + N2(g) + 4H2O(g) |
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The dark green solid "volcano" is Cr2O3.
Note: This is quite toxic...
Mirrored from the U. Illinois Dpt. of Chemistry
