Question
Question: Sodium sulphate is soluble in water whereas barium sulphate is sparingly soluble because :...
Sodium sulphate is soluble in water whereas barium sulphate is sparingly soluble because :
A
The hydration energy of sodium sulphate is more than its lattice energy
B
The lattice energy of barium sulphate is less than its hydration energy
C
The lattice energy has no role to play in solubility
D
The hydration energy of sodium sulphate is less than its lattice energy
Answer
The hydration energy of sodium sulphate is more than its lattice energy
Explanation
Solution
A compound dissolves in water when its hydration energy exceeds lattice energy. BaSO4 is sparingly soluble in water because lattice energy of BaSO4 is greater than it's hydration energy while Na2SO4 is soluble in water because it's hydration energy is greater than the lattice energy