Last updated at July 2, 2021 by
Answer
(i)
BaCl 2 (aq) + Na 2 SO 4 (aq) ⇒ BaSO 4 (s) + 2NaCl (aq)
Note that the reaction does not happen if Barium Chloride and Sodium Sulphate are solid.
This an example of Double Displacement reaction.
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To carry out the reaction of Sodium sulphate with barium chloride in the form of their solutions in water it as physical or chemical changes
Theory
ex: 2Mg(s) + O2(g) → 2MgO(s)
Chemicals Required
Barium Chloride solution(BaCl2), Sodium Sulphate Solution(Na2SO4), Dil. Hydrochloric acid(HCl)
Apparatus Required
Glass Rod, Conical Flask, Test tubesProcedure
Step 1: A small amount of barium chloride solution is taken in a test tube and poured into a conical flask. Step 2: Then a small amount of sodium sulphate solution is taken in another test tube and added into barium chloride solution taken in the conical flask. Step3: Both the contents of the conical flask is stirred with the help of glass rod and left undisturbed for some time. Step 4: After some time, small amount of dil. HCl is added to the precipitate in the conical flask for better result.Observation
On adding sodium sulphate to barium chloride, white precipitate is immediately formed which is insoluble in dil.HCl.Inference
1. Sodium sulphate chemically reacts with barium chloride in the form of their aqueous solution to form a white precipitate of barium sulphate.Na2SO4(aq) + BaCl2(aq) → BaSO4(s) + 2NaCl(aq)
(White precipitate) 2. This is a double displacement reaction in which sulphate ions are displaced by chloride ions and vice-versa. 3. The products formed are different from the reactants in chemical composition and chemical properties thus this is the case o chemical change.Precautions
1. The chemicals should be used carefully. 2. Keep the mouth away from the test tubes. 3. Handle acids and alkalies carefully.Go to List of Experiments
Answer
When sodium sulphate solution is added to barium chloride, a white precipitate is formed. Write the chemical name of precipitate obtained and type of chemical reaction involved in this process.
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