Question

Heating of ammonium dichromate produces:

Answer 1

Heating ammonium dichromate

• The heating of ammonium dichromate (${\left({\mathrm{NH}}_4\right)}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$ produces Nitrogen (${\mathrm{N}}_2$), Chromium (III) oxide (${\mathrm{Cr}}_2{\mathrm{O}}_3$), and Water (${\mathrm{H}}_2\mathrm{O}$).
• Reaction showing the thermal decomposition of Ammonium dichromate.
  $\underset{\mathrm{Ammonium}\mathrm{dichromate}}{{\left({\mathrm{NH}}_4\right)}_2{\mathrm{Cr}}_2{\mathrm{O}}_7\left(\mathrm{s}\right)}\to \underset{\mathrm{Chromium}\mathrm{Oxide}}{{\mathrm{Cr}}_2{\mathrm{O}}_3\left(\mathrm{s}\right)}+\underset{\mathrm{Nitrogen}}{{\mathrm{N}}_2\left(\mathrm{g}\right)}+4\underset{\mathrm{Water}}{{\mathrm{H}}_2\mathrm{O}}\left(\mathrm{g}\right)$

Hence, heating of ammonium dichromate produces Nitrogen (${\mathrm{N}}_2$), Chromium (III) oxide (${\mathrm{Cr}}_2{\mathrm{O}}_3$), and Water (${\mathrm{H}}_2\mathrm{O}$).