Question

Why the ammonia formed is passes through the drying tower

Answer 1

Answer:

Explanation:

ANSWER

Ammonia is prepared by heating a mixture of calcium hydroxide and ammonium chloride.

Ca(OH)

2

​

(s)+2NH

4

​

Cl(s)⟶CaCl

2

​

(s)+2H

2

​

O(l)+2NH

3

​

(g)

Concentrated sulphuric acid conc. H

2

​

SO

4

​

and anhydrous calcium chloride CaCl

2

​

are not used to dry ammonia because they react with it. The gas is passed through fresh quicklime (solid calcium oxide lumps) to effectively dry it. Ammonia is collected by upward delivery as it is lighter than air.