Barrons SAT Subject Test Chemistry, 13th Edition

The following are additional laboratory setups with which you should be
familiar:

1. PREPARATION OF A GASEOUS PRODUCT, SOLUBLE IN WATER
   AND LIGHTER THAN AIR, BY THE DOWNWARD DISPLACEMENT
   OF AIR. SEE FIGURE 38.

Example

Preparation of ammonia (NH 3 ).

2NH 4 Cl(s) + Ca(OH) 2 (s) → CaCl 2 (s) + 2H 2 O(g)+2NH 3 (g)

Figure 38. Preparation of Ammonia

2. SEPARATION OF A MIXTURE BY CHROMATOGRAPHY. SEE
   FIGURE 39.

Figure 39. Chromatography Setup