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.
Frequently asked questions
What is the correct answer to this question?
Double displacement reaction and precipitation
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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