What is the balanced equation for ammonium carbonate is heated, it decomposes into ammonia gas, carbon dioxide gas, and water vapor?

Dec 28, 2014

The reactions that describe the decomposition of ammonium carbonate (${\left(N {H}_{4}\right)}_{2} C {O}_{3}$) are:

${\left(N {H}_{4}\right)}_{2} C {O}_{3} \left(s\right) \to N {H}_{4} H C {O}_{3 \left(s\right)} + N {H}_{3 \left(g\right)}$ (1)
$N {H}_{4} H C {O}_{3 \left(s\right)} \to N {H}_{3 \left(g\right)} + {H}_{2} {O}_{\left(g\right)} + C {O}_{2 \left(g\right)}$ (2)

${\left(N {H}_{4}\right)}_{2} C {O}_{3} \left(s\right) \to 2 N {H}_{3 \left(g\right)} + C {O}_{2 \left(g\right)} + {H}_{2} {O}_{\left(g\right)}$ (3)

(1) - ammonium carbonate decomposes into ammonium bicarbonate and ammonia ($N {H}_{3}$);
(2) - ammonium bicarbonate decomposes into carbon dioxide ($C {O}_{2}$), water, and ammonia;
(3) - the decomposition of ammonium carbonate - total reaction;

Both reaction are endothermic - heat must be supplied in order for the reaction to take place.

Here's a video of the reaction: