Negative ions- Sulphate test (Edexcel GCSE Chemistry): Flashcards

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8.3.5 Sulphates
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Formula of sulphate ion

\ceSO42\ce{SO4^2-}

Reagent to test for sulphate ions

Barium chloride (\ceBaCl2\ce{BaCl2})

Acid added with \ceBaCl2\ce{BaCl2} in sulphate test

Dilute hydrochloric acid (\ceHCl\ce{HCl})

Observation when testing for sulphate ions

White precipitate forms

Name of precipitate in sulphate test

Barium sulphate

Formula of barium sulphate

\ceBaSO4\ce{BaSO4}

Equation for sulphate test with barium chloride

\ceSO42+BaCl2>BaSO4+2Cl\ce{SO4^2- + BaCl2 -> BaSO4 + 2Cl-}

What white precipitate indicates in sulphate test

Presence of sulphate ions

What \ceSO42\ce{SO4^2-} ions displace in \ceBaCl2\ce{BaCl2}

Chloride ions

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