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Ammonium Dichromate

Ammonium dichromate is an inorganic compound with the chemical formula (NH4)2Cr2O7(NH_4)_2Cr_2O_7. It appears as a bright orange-red crystalline solid and is known for its highly exothermic decomposition reaction.

R231.60R911.70

Ammonium dichromate is an inorganic compound with the chemical formula (NH4)2Cr2O7(NH_4)_2Cr_2O_7. It appears as a bright orange-red crystalline solid and is known for its highly exothermic decomposition reaction. When heated, ammonium dichromate decomposes into chromium(III) oxide (Cr₂O₃), nitrogen gas (N₂), and water vapor (H₂O), producing a green ash and a dramatic “volcano-like” effect, which makes it popular in chemical demonstrations.

This compound is also a strong oxidizing agent and is used in various laboratory processes, such as the preparation of other chromium compounds, photography, and as a catalyst. However, it is toxic, corrosive, and a potential carcinogen, so it must be handled with care.

For many learners high school is not enough to prepare them for what they are to face at first year university. They find themselves completely overwhelmed and intimidated by what is expected of them to be able to do in a laboratory.

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