Question

when a solution of ammonia added to calcium salt​

Answer 1

Answer:

Ca(OH)2 + 2 NH4Cl --> CaCl2 + 2NH3 + 2H20. If 5.35 g of ammonium chloride is used calculate : the weight of calcium chloride formed. the volume at STP of ammonia liberated at the same time.

Answer 2

After synthesis, ammonia can be selectively absorbed by calcium chloride; nitrogen and hydrogen are not absorbed. The kinetics of release seem to be diffusion controlled. The kinetics of absorption are consistent with a first order reaction after an initial period of a higher order reaction, which may indicate a nucleation event. At 225 oC, both absorption and release show half-lives of around ten minutes if the ammonia partial pressure is swung from two to one bar, which allows design of an absorber for the periodic separation of ammonia. When this absorber replaces the ammonia condenser in a conventional ammonia synthesis, the ammonia production at low pressure can have the same rate as the conventional process operating at higher pressure.