5.3.2
Qualitative
Analysis
Section 5.3.2 asks for the processes and techniques, on a test-tube scale, that identify the anions CO₃²⁻, Cl⁻, Br⁻, I⁻ and SO₄²⁻, the ammonium ion, and the transition element cations Cu²⁺, Fe²⁺, Fe³⁺, Mn²⁺ and Cr³⁺ in an unknown compound. The 3.1.4 Tests for Ions page gives the first-year tests; the new page builds them into a systematic identification scheme that includes the hydroxide and ammonia reactions of 5.3.1.
Revision Notes
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Tests for Ions
Tests for carbonate, hydrogencarbonate, sulfate, halide and ammonium ions, with ionic equations and the order of tests on an unknown.
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Qualitative Analysis of Ions: Anions, Ammonium and Transition Element Cations
Qualitative analysis: identifying anions, the ammonium ion and transition element cations in an unknown compound by test-tube reactions.
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5.3.2
- a (i)
qualitative analysis of ions on a test-tube scale: processes and techniques needed to identify the anions CO32–, Cl–, Br–, I–, SO42– in an unknown compound (see 3.1.4 a)
Revise - a (ii) a
qualitative analysis of ions on a test-tube scale: processes and techniques needed to identify the cation NH4+ in an unknown compound (see 3.1.4 a)
Revise - a (ii) b
qualitative analysis of ions on a test-tube scale: processes and techniques needed to identify the cations Cu2+, Fe2+, Fe3+, Mn2+, Cr3+ in an unknown compound (see 5.3.1 j)
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