CONTENT
What is Ammonium Dichromate? Properties of (NH4)2Cr2O7
It’s hazards Applications in daily life An experiment with Ammonium
Dichromate
(NH4)2Cr2O7 A salt that forms orange, monoclinic crystals; made from ammonium sulfate and sodium dichromate; soluble in water and alcohol; ignites readily; used in photography, lithography, pyrotechnics, and dyeing. Also known as ammonium bichromate.
Ammonium Dichromate Properties:
Formula: (NH4)2Cr2O7
Molecular Weight: 252.07 g/molMelting Point: 1800CBoiling Point: DecomposesState at Room Temperature: Solid
Uses: Oil Purification, Pickling, Leather Tanning, Photography, Wood Preservative, Catalysts
Interesting Facts: Used in high school chemistry labs to make "volcanos"
Hypothesis: In my opinion, in the experiment the
ammonium dichromate will decomposes and it will be a combustion reaction and as a result of it, there will be some green or grey dust particles.
VIDEO
http://www.youtube.com/watch?v=CW4hN0dYnkM&list=LPUQJSgA0UH5k&index=1&feature=plcp
Sources: http://en.wikipedia.org/wiki/Ammonium_dichromate#
Safety http://www.chemistryland.com/CHM130S/08-Equations/
TypesReactions/TypesReactions.htm http://www.emsb.qc.ca/laurenhill/science/oxidation.html http://nj.gov/health/eoh/rtkweb/documents/fs/0097.pdf http://www.juliantrubin.com/encyclopedia/earthsciences
/volcano.html http://www.chemistry-reference.com/q_compounds.asp
?CAS=7789-09-5 http://wiki.answers.com/Q/Describe_the_action_of_heat_
on_ammonium_dichromate
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