Formulas I struggle with

Question 1

Lattice enthalpy =

Answer 1

FORMATION – sum(ATOM + I.E + E.A)

OR

FORMATION – sum(REST)

Question 2

∑ΔHhydration =

Answer 2

ΔHlattice enthalpy + ΔHsolution

Question 3

deltaStheta =

Answer 3

sum(Sthetaproducts) – sum(Sthetareactants)

Question 4

deltaSsurroundings =

Answer 4

(-deltaHsystem)/T

Question 5

deltaStotal =

Answer 5

deltaSsystem + deltaSsurroundings

Question 6

deltaG =

Answer 6

deltaH – T deltaS < 0