Two aqueous solutions are mixed and a white insoluble solid and sodium chloride are formed. What could be the original solutions?
Answer and explanation
Correct answer: Barium chloride and sodium sulphate
Barium chloride and sodium sulphate undergo a double-displacement reaction: BaCl₂(aq) + Na₂SO₄(aq) → BaSO₄(s) + 2NaCl(aq). Barium sulphate is a white insoluble precipitate, while sodium chloride remains dissolved. The other choices do not provide the required pair of products or do not represent two suitable aqueous salt solutions.
Frequently asked questions
What is the correct answer to this question?
Barium chloride and sodium sulphate
Why is this the correct answer?
Barium chloride and sodium sulphate undergo a double-displacement reaction: BaCl₂(aq) + Na₂SO₄(aq) → BaSO₄(s) + 2NaCl(aq). Barium sulphate is a white insoluble precipitate, while sodium chloride remains dissolved. The other choices do not provide the required pair of products or do not represent two suitable aqueous salt solutions.
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.
