CAIE IGCSE Chemistry 12.5.2 Cation Tests Using Aqueous Sodium Questions
Work through real CAIE IGCSE Chemistry questions to identify cations from precipitate colours, gas tests and excess-reagent behaviour.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Exam points
- identify ammonium ions by warming with aqueous sodium hydroxide and testing the ammonia gas
- describe hydroxide precipitate colours and solubility for aluminium, calcium, chromium, copper, iron and zinc ions
- use excess sodium hydroxide and aqueous ammonia to distinguish cations by whether precipitates dissolve
- identify cations from combined reagent observations and write formulae for hydroxide precipitates where required
CAIE IGCSE Chemistry 12.5.2 Cation Tests Using Aqueous Sodium Questions question 1
[Maximum number: 1]
Which gas is produced when ammonium chloride is warmed with aqueous sodium hydroxide?
A
ammonia
B
chlorine
C
hydrogen
D
nitrogen
A
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