Question

The crystalline salt $Na _{2} SO _{4} \cdot xH _{2} O$ on heating loses $55.9 \%$ of its mass ad becomes anhydrous. The formula of crystalline salt is

• A. $Na _{2} SO _{4} \cdot 5 H _{2} O$
• B. $Na _{2} SO _{4} \cdot 7 H _{2} O$
• C. $Na _{2} SO 4.2 H _{2} O$
• D. $Na _{2} SO _{4} \cdot 10 H _{2} O$

Answer 1

Answer: (D)

Correct answer is (d) $Na _{2} SO _{4} \cdot 10 H _{2} O$