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MolE05 Visualise the reaction between ammonia and "hydrochloric acid gas" molecules
* Left Previous experiment:
Solid ammonium chloride is formed by ammonia and HCl-Gas.
Right: Weld models
of the molecules "hydrochloric acid gas"
HCl, ammonia NH3 and of the chloride (Cl-)
and ammonium (NH4+) ions
using white, green and blue beads.
Explanation
(the left models on the right photo: If HCl
und NH3 molecules collide this way, each HCl molecule donates
its H-Atom without the electron (H+, "proton") to an N atom
of an ammonium molecule which reacts as a proton acceptor. This proton transfer reaction
results in negative chloride (Cl-) and in positive anmonium (NH4+)
ions.
Explanation
using the right models: The negative and the positive ions attract each other forming
an ammonium chloride lattice: NH4Cl
(s).