Question

Ammonium dichromate on heating observations

Answer 1

Ammonium dichromate decomposes easily on heating. It produces nitrogen gas, water vapor and solid chromium oxide.

(NH4)2Cr2O7 --------> N2 + Cr2O3 + 4H2O  

Answer 2

Explanation:

Ammonium dichromate, (NH4)2Cr2O7, decomposes when heated to produce chromium(III) oxide [Cr2O3], nitrogen gas, and water vapor:

(NH4)2Cr2O7(s) ——> Cr2O3(s) + N2(g) + 4H2O(g)

While the ammonium dichromate decomposes, it gives off orange sparks and throws the green chromium(III) oxide crystals into the air, producing an effect that looks like a miniature volcanic eruption.