Question

The diagram represents the preparation of sodium sulphate salt from dilute $H_{2}S{O}_4$ acid and sodium hydroxide. State which solution is transferred to the evaporating dish and evaporated to point of crystallisation for obtaining the salt?

• A. Sodium chloride
• B. Barium chloride
• C. Sodium sulphate
• D. Calcium chloride

Answer 1

Answer: (C)

Sodium sulphate

The neutralized solution of sodium hydroxide by sulfuric acid is transferred to the evaporation dish. The product of the neutralisation reaction is sodium sulphate and water. Hence, the solution transferred to the evaporation dish contains aqueous sodium sulphate.

Hence the correct option is $C$