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BITSAT2017Chemistrys Block ElementsActual

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

Options

  1. Ahydration energy of Na 2 SO 4 is more than of its lattice energy
  2. Blattice energy of BaSO 4 is more than its hydration energy
  3. CBoth ( a ) and ( b )
  4. DNone of the above

Correct answer

C. Both ( a ) and ( b )

Step-by-step solution

For any solution to become soluble in water hydration energy of the solution should me more than its lattice energy. Here the hydration energy of sodium sulphate is more than lattice energy but in case of barium sulphate lattice energy of barium sulphate is more than its hydration energy. For dissolution hydration energy must be more higher ( - ve ) value than of lattice energy. Thus, (c) is the correct answer.

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