Question

The green coloured compound that is produced by burning ammonium dichromate is:
CrO3
Cr2O3​

Answer 1

Answer:

CrO3 is the right one........

While the ammonium dichromate decomposes, it throws the green chromium(III) oxide (CrO3)crystals into the air, producing an effect that looks like a miniature volcanic eruption.....

Answer 2

The green coloured compound that is produced by burning ammonium dichromate is: Cr2O3​

• Ammonium dichromate[(NH4)2Cr2O7], when heated or undergoes thermal decomposition to form chromium(III) oxide[Cr2O3​], nitrogen( gas) and also water.

• The reaction can be written as-

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

[ ^ represents heat]

• The effect is like that of a volcanic eruption. It is because ammonium dichromate produces orange sparks along with green crystals( chromium oxide).