Sulphates (OCR GCSE Chemistry A (Gateway Science Suite)): Flashcards

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Sulphates
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Formula of sulphate ion

\ceSO42−\ce{SO4^2-}

Reagent to test for sulphate ions

Barium chloride \ceBaCl2\ce{BaCl2} (with dilute HCl)

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

Dilute hydrochloric acid (HCl)

Observation when sulphate ions present

White precipitate forms

Name of white ppt in sulphate test

Barium sulphate

Formula of barium sulphate

\ceBaSO4\ce{BaSO4}

Formula of barium chloride

\ceBaCl2\ce{BaCl2}

Equation for sulphate test

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

What ion displaces chloride in sulphate test

Sulphate ion

What white ppt indicates in sulphate test

Presence of sulphate ions

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