Question

Sodium sulphate is soluble in water but barium sulphate is insoluble because

• A. the hydration energy of $Na_2SO_4$ is more than its lattice energy
• B. the lattice energy of $BaSO_4$ is more than its hydration energy
• C. the lattice energy has no role to play in solubility
• D. Both A and B.

Answer 1

Answer: (D)

Both A and B.

Answer 2

Hydration energy of $Na_2SO_4$ is more than its lattice energy and lattice energy of $Ba_2SO_4$ is more than its hydration energy.