Which of the following equations represents a double displacement reaction?
Answer and explanation
Correct answer: \(\mathrm{Na_2SO_4(aq) + BaCl_2(aq) \rightarrow BaSO_4(s) + 2NaCl(aq)}\)
In a double displacement reaction, the ions of two ionic compounds exchange partners. In option A, \(\mathrm{Na^+}\) and \(\mathrm{Ba^{2+}}\) form new ionic pairs with the anions, producing insoluble \(\mathrm{BaSO_4}\) as a precipitate. Option B is a single displacement reaction because zinc displaces copper from its salt.
Frequently asked questions
What is the correct answer to this question?
\(\mathrm{Na_2SO_4(aq) + BaCl_2(aq) \rightarrow BaSO_4(s) + 2NaCl(aq)}\)
Why is this the correct answer?
In a double displacement reaction, the ions of two ionic compounds exchange partners. In option A, \(\mathrm{Na^+}\) and \(\mathrm{Ba^{2+}}\) form new ionic pairs with the anions, producing insoluble \(\mathrm{BaSO_4}\) as a precipitate. Option B is a single displacement reaction because zinc displaces copper from its salt.
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.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
