Thermal Decomposition of Ammonium Dichromate (Volcano Reaction)

(NH4)2Cr2O7 → Cr2O3 + N2 + 4H2O

अवलोकन

Ammonium dichromate decomposes spectacularly when ignited, producing green chromium(III) oxide, nitrogen gas, and water vapor. The green fluffy chromium oxide rises like a miniature volcano as gases escape, making this one of the most dramatic chemistry demonstrations.

प्रतिभागी

भूमिका पदार्थ गुणांक अवस्था
उत्पाद Nitrogen N 1 (g)
उत्पाद Water H₂O 4 (g)

रोजमर्रा का उदाहरण

This is the famous chemical volcano demonstration performed in science classes and science fairs worldwide.

औद्योगिक महत्व

Chromium(III) oxide produced by this and related reactions is used as a green pigment (chrome green), in magnetic tape coatings, and as a polishing compound.

गुण

प्रकार
Decomposition
प्रतिवर्ती
नहीं
ऊर्जा
ऊष्माक्षेपी
ΔH
-315.0 kJ/mol

संबंधित अभिक्रियाएँ

Decomposition of Ammonium Nitrate Decomposition of Calcium Hypochlorite Decomposition of Carbonic Acid Decomposition of Iron(II,III) Oxide (Direct Reduction) Decomposition of Nitrous Oxide (Laughing Gas) Decomposition of Barium Peroxide Decomposition of Sodium Bicarbonate Decomposition of Water (Electrolysis) Thermal Decomposition of Copper(II) Carbonate Cracking of Octane (Thermal Cracking)

Frequently Asked Questions

What is the equation for Thermal Decomposition of Ammonium Dichromate (Volcano Reaction)?
The balanced equation is: (NH₄)₂Cr₂O₇ → Cr₂O₃ + N₂ + 4H₂O.
What type of reaction is Thermal Decomposition of Ammonium Dichromate (Volcano Reaction)?
Thermal Decomposition of Ammonium Dichromate (Volcano Reaction) is a decomposition reaction.
Is Thermal Decomposition of Ammonium Dichromate (Volcano Reaction) exothermic or endothermic?
Thermal Decomposition of Ammonium Dichromate (Volcano Reaction) is exothermic (releases energy). The enthalpy change (ΔH) is -315.0 kJ/mol.