What is the white precipitate formed in the reaction of sodium sulphate and barium chloride?

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SSC GD Constable (2022) Official Paper (Held On : 12 Jan 2023 Shift 1)
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  1. Barium hydroxide 
  2. Sodium chloride
  3. Sodium oxide 
  4. Barium sulphate

Answer (Detailed Solution Below)

Option 4 : Barium sulphate
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Detailed Solution

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The correct answer Barium sulphate.

Key Points

  • The white precipitate formed in the reaction of sodium sulfate and barium chloride is barium sulfate.
  • The chemical reaction is as follows:
Na2SO4(aq) + BaCl2(aq) → BaSO4(s) + 2NaCl(aq)
  • In this reaction, the sodium and chloride ions from each reactant switch places to form sodium chloride and barium sulfate.
  • Barium sulfate is a white, insoluble precipitate.
Additional Information

Here is a table of the incorrect options with their chemical formula and name:

Option Chemical Formula Name
Barium hydroxide Ba(OH)2 A white, water-soluble solid
Sodium chloride NaCl A white, water-soluble salt
Sodium oxide Na2O A white, water-insoluble solid
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