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CSCA ChemistryChapter 4: Chemical Experiments and ApplicationsIntermediate

Preparation of Common Gases & Industrial Chemical Processes

常见气体制备检验与工业生产流程剖析 · Node 4.2

Laboratory synthesis and collection of O2, H2, CO2, Cl2, NH3, and industrial flows including the Haber-Bosch process.

Chapter Weight: 15% of official examination
Practice This Node

Core Mathematical Axiom

Formula Proof & Traps
Haber Process: N2​(g)+3H2​(g)450∘C,20 MPaFe catalyst​2NH3​(g)(ΔH<0)
CSCA Exam Trap Alert

Using concentrated sulfuric acid to dry basic ammonia gas (NH3 reacts instantly to form (NH4)2SO4; use CaO/soda lime instead).

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