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Formation of white solid barium sulphate shows which dual identification?

Answer and explanation

Correct answer: Double displacement reaction and precipitation

For example, in
\(BaCl_2(aq)+Na_2SO_4(aq)\rightarrow BaSO_4(s)+2NaCl(aq)\), the ions exchange partners, so it is a double displacement reaction. The \(BaSO_4\) formed is an insoluble white solid in water; therefore, its formation is called precipitation. A combination reaction usually forms one product from the reactants, so option A is not suitable. Exam tip: When mixing aqueous solutions produces an insoluble solid, identify that solid as a precipitate.

Related tags

Class 10 ScienceChemical ReactionsDouble Displacement ReactionPrecipitation ReactionBarium Sulphate

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