| A trip to the salt
mines shows how rock salt is mined and then crushed underground to be
transported to the surface as a granular product. The study of a block
of rock salt leads to a discussion of sphere packing as an aid to
understanding simple crystal types, and treats the energy of formation
of salt in terms of a Born-Haber cycle. The electrolysis of molten salt
and brine is discussed, and the industrial-scale electrolysis of brine
is shown, covering the mercury, diaphragm, and membrane cells. |
