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  • Help me solve this Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?

Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?

  • Option 1)

    C_{a}SO_{4}

  • Option 2)

    B_{e}SO_{4}

  • Option 3)

    B_{a}SO_{4}

  • Option 4)

    S_{r}SO_{4}

 

Answers (1)

best_answer

 

 

Solubility of sulphates of alkaline metals -

Solubility in water decreases from Be to Ba

- wherein

 

Lattice energy is constant whereas hydration energy decreases from Be^{2}^{+}\ to\ Ba^{2}^{+}

 

 

 

 

 

 Among alkaline earth metal sulphates, lattice energy remains almost constant as we go down the group but hydration enthalpy decreases dramatically. Sa, B_{e}SO_{4}  has higher hydration enthalpy than its lathia enthalpy.


Option 1)

C_{a}SO_{4}

Incorrect Option

Option 2)

B_{e}SO_{4}

Correct Option

Option 3)

B_{a}SO_{4}

Incorrect Option

Option 4)

S_{r}SO_{4}

Incorrect Option

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