CHEMISTRY – Qualitative Analysis

Qualitative analysis requires the identification of cations, anions and gases as specified in the syllabus. This includes how the ions and gases will be tested for their presence (procedures and reagents) as well as the expected results. This topic is a topic that many students find it confusing, especially the section on cations.

For the identification of cations, students will have to memorise the solubility and the colours of the precipitates formed in two solutions, mainly sodium hydroxide and ammonia. The memorisation of the test for presence of anions and gases are easier, with a few being very straightforward. For students who find it very difficult to memorise the entire Qualitative Analysis chart, you may like to link to the chemical properties of the ions and gases. These properties will be covered in ‘Acids and Bases’ and ‘Salts’.


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