Thermodynamics Flashcards
1
Q
When is there covalent character in ionic substances
A
the positive ion is small
•the positive ion has multiple charges •the negative ion is large
•the negative ion has multiple negative charges.
2
Q
The perfect ionic model
A
Theoretical lattice enthalpies assumes a perfect ionic model where the ions are 100% ionic and spherical and the attractions are purely electrostatic.
3
Q
which enthalpy of formation produces the most stable compound
A
The one with the most exothermic enthalpy of formation will be the one that forms as it will be the most thermodynamically stable
4
Q
units for entropy
A
J K-1 mol-1
5
Q
calculation for entropy
A
∆S ̊ = Σ S ̊products - ΣS ̊reactants
