Sodium sulfate is soluble in water,whereas barium sulfate is sparingly soluble. Why?

  • A
    The hydration energy of $Na_2SO_4$ is greater than its lattice energy,whereas the lattice energy of $BaSO_4$ is greater than its hydration energy.
  • B
    Lattice energy has no significance in the case of solubility.
  • C
    The lattice energy of $Na_2SO_4$ is greater than its hydration energy.
  • D
    None of these.

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