Question

We will observe a precipitation to occur in the solution when
a) barium chloride is added to sodium chloride
b) barium chloride is added to sodium sulphate
c) sodium sulphate is added to sodium chloride
d) sodium sulphate is added to barium sulphate​

Answer 1

Answer:

Barium chloride is added to sodium sulphate.

Explanation:

Option B

Answer 2

We will observe a precipitation to occur in the solution when b) barium chloride is added to sodium sulphate.

• When barium chloride is added to sodium sulphate, the precipitate of barium sulphate will be obtained.
• A white precipitate of barium sulphate will be obtained in the solution of sodium chloride at the end of the reaction.
• Hence, we can say that the precipitation will be observed to occur in the solution of barium chloride and sodium sulphate.

The precipitation reaction is given below-

$BaCl_{2}(aq)+Na_{}SO_{4}(aq) \rightarrow 2NaCl (aq)+ BaSO_{4}(s)$

• Barium chloride and sodium chloride will give the same chloride ions as the anion, so the reaction does not occur.
• Sodium sulphate and sodium chloride will give the same sodium ions as the cation, so the reaction does not occur.
• Sodium sulphate and sodium chloride will give the same sulphate ions as the anion, so the reaction does not occur.