InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Ionisation energy of `A1=5137KJmol^(-1)(DeltaH)` hydration of `Al^(3+)=-4665KJmol^(-1).(DeltaH)_(hydration)` for `Cl^(-)=-381KJmol^(-1)` . Which of the following statement is correct?A. `AlCl_(3)` would remauin covalent in aqueous solutionB. Only at infinite dilution `AlCl_(3)` undergoes ionisationC. In aqueous solution `AlCl_(3)` becomes ionicD. Nonee of these |
|
Answer» Correct Answer - C If `AlCl_(3)` is present in ionic state in aqueous solution, therefore it has `Al^(3+)` and `3Cl^(-)` inos Standard heat of hydration of `Al^(3+)` and `3Cl^(-)` inos `=-4665+3xx(-381)Kjmol^(-1)` `=-5808KJ//mol` Required energy of ionisation of `Al=5137KJmol^(-1)` `:.` Hydration energy overcomes ionisation energy `:. AlCl_(3)` would be ionic in aqueous solution |
|