Question

Consider the below statements and identify the correct answer?

1. Statement I: Anhydrous sodium carbonate is used in soda-acid fire extinguishers.
2. Statement II: Anhydrous sodium carbonate is dissolved in water and recrystallized to get washing soda crystals containing 10 molecules of water of crystallization.

• A. 1, 2
• B. 2 only
• C. 1 only
• D. None of these

Answer 1

Answer:

B. 2 only

Statement I is incorrect. Statement II is correct. Anhydrous Sodium Carbonate (soda ash) is dissolved in water and recrystallized to get washing soda crystals. Washing soda crystals contain 10 molecules of water of crystallization. Washing soda is the common name of Sodium carbonate decahydrate.