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Na(2)SO(4) is soluble in water while BaS...

`Na_(2)SO_(4)` is soluble in water while `BaSO_(4)` is insoluble. Which of the reason is correct about the above statement.

A

Lattice energy of `BaSO_(4)` exceeds its hydration energy.

B

Hydration energy of `BaSO_(4)` exceeds its lattice energy.

C

The solubility in `H_(2)O` of a compound depends ony on its hydration energy.

D

The solubility in `H_(2)O` of a compound depends only on its lattice enregy.

Text Solution

Verified by Experts

The correct Answer is:
A
For ionic compound if lattice energy `(Delta_(u) H^(ɵ)) gt` hydration energy `(Delta_(hyd)H^(ɵ))` the compound is insoluble and vice versa.
For `Na_(2)SO_(4), Delta_(u)H^(ɵ) lt Delta_(hyd)H^(ɵ)`, thus it is soluble in `H_(2)O`.
For `BaSO_(4), Delta_(u)H^(ɵ) gt Delta_(hyd)H^(ɵ)`, thus it is insoluble in `H_(2)O`.
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