Chemistry (Combined Science) · IGCSE · Edexcel · Pearson Edexcel International GCSE Science (Double Award) — Chemistry (Linear) — 4SD0 · Specification point · 2.47 · Inorganic chemistry · Chemical tests
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2.47 describe tests for these cations: • NH₄⁺ using sodium hydroxide solution and identifying the gas evolved • Cu²⁺, Fe²⁺ and Fe³⁺ using sodium hydroxide solution |