ChemistryAcids, bases and saltsJAMB
Which salt is best prepared by precipitation (double decomposition)?
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Answer: B. barium tetraoxosulphate(VI)
BaSO₄ is insoluble, so it precipitates when solutions of a barium salt and a sulphate are mixed.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.