Common Ion Test Method (Sulfate Ion)
Sulfate ion (SO₄²⁻) test: Add dilute hydrochloric acid to acidify the test solution, then add barium chloride solution (BaCl₂). If a white precipitate (BaSO₄)…
Syllabus path: Properties of Substances and Reactions › Ionic Reactions & Testing
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CSCA Chemistry Formula Reference
Formula and explanation
Sulfate ion (SO₄²⁻) test: Add dilute hydrochloric acid to acidify the test solution, then add barium chloride solution (BaCl₂). If a white precipitate (BaSO₄) forms and does not dissolve in dilute hydrochloric acid, it indicates the presence of SO₄²⁻. Reaction: Ba²⁺ + SO₄²⁻ ightarrow BaSO₄.
Related tutorial and examples
Ionic Reactions & Testing
Ionic Reactions & Testing 1. Core Concept: Writing Ionic Equations The essence of an ionic reaction is the reduction of ion concentration. In the CSCA exam, "Split or Keep" is the most frequent testing point for writing and judging ionic equations. The "Split or Keep" Rules 1. Wr…
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