A) \[AlC{{l}_{3}}\] would remain covalent in aqueous solution
B) Only at infinite dilution \[AlC{{l}_{3}}\] undergoes ionisation
C) In aqueous solution \[AlC{{l}_{3}}\] becomes ionic
D) None of these
Correct Answer: C
Solution :
If \[AlC{{l}_{3}}\] is present in ionic state in aqueous solution, therefore it has \[A{{l}^{3+}}\text{ }and\text{ }3C{{l}^{-}}\] ions Standard heat of hydration of \[A{{l}^{3+}}\text{ }and\text{ }3C{{l}^{-}}\] ions \[= \,- 4665 + 3 \times \left( -381 \right) kJ mole{{\,}^{-}}^{1}\] \[\,= -5808 kJ/mole\] Required energy of ionisation of \[\operatorname{Al} = 5137 kJ mole{{\,}^{-}}^{1}\] \[\therefore \] Hydration energy overcomes ionisation energy \[\therefore \] \[AlC{{l}_{3}}\] would be ionic in aqueous solutionYou need to login to perform this action.
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