Chemistry (Combined Science) · IGCSE · Edexcel · Pearson Edexcel International GCSE Science (Double Award) — Chemistry (Modular) — 4XSD1 · Specification point · 2.14 · Inorganic chemistry: Part 1 · Acids, alkalis and titrations
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2.14 describe the use of litmus, phenolphthalein and methyl orange to distinguish between acidic and alkaline solutions |