factors affecting enthalpy Flashcards
1
Q
how does ionic radius affect lattice enthalpy?
A
- ionic radius increases
- attraction between ions decreases
- lattice energy becomes less negative
2
Q
how does ionic charge affect lattice enthalpy?
A
- ionic charge decreases
- attraction between ions decreases
- lattice energy becomes less negative
3
Q
how does ionic radius affect hydration enthalpy?
A
- ionic radius increases
- attraction between ion and water molecule decreases
- hydration energy becomes less negative
4
Q
how does ionic charge affect hydration enthalpy?
A
- ionic charge increases
- attraction with water molecule increases
- hydration energy becomes more negative
5
Q
how can solubility be predicted?
A
- if the sum of hydration enthalpies is larger than the lattice enthalpy, the overall enthalpy change will be exothermic
- the compound should dissolve
