What type of reaction occurs when aqueous solutions of sodium sulphate and barium chloride are mixed?
Answer and explanation
Correct answer: Double displacement (precipitation) reaction
The reaction is \(\mathrm{Na_2SO_4(aq) + BaCl_2(aq) \rightarrow BaSO_4(s) + 2NaCl(aq)}\). Here, \(\mathrm{Na^+}\) and \(\mathrm{Ba^{2+}}\) exchange anionic partners, and insoluble white \(\mathrm{BaSO_4}\) forms as a precipitate. Therefore, it is a double displacement, specifically a precipitation, reaction. In a single displacement reaction, a more reactive element replaces another element from a compound; that does not happen here.
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What is the correct answer to this question?
Double displacement (precipitation) reaction
Why is this the correct answer?
The reaction is \(\mathrm{Na_2SO_4(aq) + BaCl_2(aq) \rightarrow BaSO_4(s) + 2NaCl(aq)}\). Here, \(\mathrm{Na^+}\) and \(\mathrm{Ba^{2+}}\) exchange anionic partners, and insoluble white \(\mathrm{BaSO_4}\) forms as a precipitate. Therefore, it is a double displacement, specifically a precipitation, reaction. In a single displacement reaction, a more reactive element replaces another element from a compound; that does not happen here.
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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