Chemistry (Combined Science) · IGCSE · Edexcel · Pearson Edexcel International GCSE Science (Double Award) — Chemistry (Modular) — 4XSD1 · Specification point · 6.18 · Inorganic chemistry: Part 2 · Chemical tests
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6.18 describe tests for these cations: • NH₄⁺ using sodium hydroxide solution and identifying the gas evolved • Cu²⁺, Fe²⁺ and Fe³⁺ using sodium hydroxide solution |