Question

explain difference between sublimation and thermal dissociation of ammonium chloride

Answer 1

Thermal dissociation is the breaking apart of a molecule's bonds due to the introduction of heat.

NH₄Cl --> NH₃ + HCl

Sublimation is the transition of a substance directly from the solid phase to the gas phase without passing through an intermediate liquid phase. Sublimation is an endothermic phase transition that occurs at temperatures and pressures below a substance's triple point in its phase diagram.

NH₄Cl (s) <=> NH₄Cl (liq)