A white precipitate was formed when \( \mathrm{BaCl_2(aq)} \) was added to an aqueous solution of a salt X. The precipitate dissolved in dilute HCl with rap...

Assessment: WAEC SSCE - Chemistry - 2022 (Objective) Subject: Chemistry

Question 1 Report

A white precipitate was formed when \( \mathrm{BaCl_2(aq)} \) was added to an aqueous solution
of a salt X. The precipitate dissolved in dilute HCl with rapid effervescence. Salt X is likely to contain

_{4}

^{2 -}

ions

_{3}

^{2 -}

ions

_{3}

- ions

_{3}

^{2 -}

- ions

Answer Details

Effervescence is the formation of gas bubbles in a liquid by a chemical reaction. An example of effervescence is the release of carbon dioxide which bubbles as a gas from the liquid when limestone chips, which are composed of calcium carbonate, are added to dilute hydrochloric acid.

Read lesson note on Acids, Bases And Salts (JAMB)

Acids, Bases And Salts

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A white precipitate was formed when \( \mathrm{BaCl_2(aq)} \) was added to an aqueous solution of a salt X. The precipitate dissolved in dilute HCl with rap...

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