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Hydrogen and its Compounds7 Topics1 Quiz
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Oxygen and its Compounds7 Topics1 Quiz
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Halogens, Chlorine and its Compounds7 Topics1 Quiz
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Hydrogen Chloride and Hydrochloric Acid5 Topics1 Quiz
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Nitrogen and Its Compounds9 Topics1 Quiz
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Ammonia9 Topics1 Quiz
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Sulphur and its Compounds13 Topics1 Quiz
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Hydrocarbons12 Topics1 Quiz
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Alkanols4 Topics1 Quiz
Topic Content:
- Laboratory Preparation of Ammonia
- Drying of Ammonia Gas
- Industrial Production of Ammonia
Ammonia is a compound of nitrogen and hydrogen with the formula NH3 and a very important chemical in chemistry.
Laboratory Preparation of Ammonia:
Ammonia is prepared in the laboratory by heating an ammonium salt with slaked lime [Ca(OH)2 ] or a strong alkali e.g. sodium hydroxide. Slaked lime is preferred because it is cheap and not deliquescent like other caustic alkalis.
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\( \scriptsize 2NH_4Cl{(s)} + Ca(OH)_{(2(S)} \rightarrow 2NH_{3(g)} + CaCl_{2(aq)} + 2H_2O_{(l)} \)
Drying of Ammonia Gas:
The drying agent used for ammonia gas is calcium oxide, CaO (quick lime). Other drying agents such as concentrated tetraoxosulphate(VI) acid or phosphorus(V) oxide or fused calcium chloride cannot dry ammonia gas.
Tetraoxosulphate(VI)
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