Advertisements
Advertisements
Question
Why drying agents such as P2O5 and CaCl2 are not used to dry NH3?
Advertisements
Solution
The drying agent is quicklime [CaO]. Drying agents such as P2O5 and CaCl2 are not used because they react with ammonia, which is basic.
\[\ce{6NH3 + P2O5 + 3H2O -> \underset{[Ammonium metaphosphate]}{2(NH4)3PO4}}\]
Anhydrous calcium chloride reacts with ammonia to form a solid complex compound.
\[\ce{CaCl2 +4NH3 -> \underset{[a complex compound]}{CaCl2*4NH3}}\]
APPEARS IN
RELATED QUESTIONS
Give reasons for the following:
Liquid ammonia is used as a refrigerant in ice plants.
Name one salt of ammonia that is used in a dry cell.
Name a compound prepared by ammonia and is used as explosive.
Name a compound prepared by ammonia and is used as medicine.
Name a compound prepared by ammonia and is used as laboratory reagent.
Explain the following:
Ammonium nitrate is not used in the laboratory preparation of NH3.
Give one use each of four different compounds of ammonia.
State the advantages of using ammonia as a refrigerant?
- Which feature of the ammonia molecule leads to the formation of the ammonium ion when ammonia dissolves in water?
- Name the other ion formed when ammonia dissolves in water.
- Give one test that can be used to detect the presence of the ion produced in (b).
