Factors affecting lattice enthalpy Flashcards
1
Q
What factors affect lattice enthalpy?
A
- ionic charge
- ionic radius
2
Q
How does ionic charge affect LE?
A
- as ionic charge increases
- attraction between ions increases
- LE becomes more negative as more energy is required to overcome the stronger ionic bonding
- melting point increases
3
Q
How does ionic radius affect LE?
A
- ionic radius increases
- attraction between ions decreases
- LE is more positive as there is a lower electrostatic attraction
- melting point decreases
4
Q
How does ionic size affect enthalpy of hydration?
A
- as ionic size increases
- attraction between ion and water decreases
- enthalpy of hydration is less negative
5
Q
How does ionic charge affect enthalpy of hydration?
A
- as ionic charge increases
- attraction between water and ion increases
- more negative enthalpy of hydration
