enthalpy + entropy

Question 1

what is the free energy equation

Answer 1

ΔG = ΔH - TΔS

Question 2

entropy equation

Answer 2

ΔS= ΔSproducts - ΔS reactants

Question 3

define enthalpy of solution

Answer 3

enthalpy change when one mol of a compound is dissolved

Question 4

enthalpy change of hydration

Answer 4

when 1 mol of gaseous ions produces 1 mol of aqueous ions

Question 5

define lattice enthalpy

Answer 5

enthalpy change when 1 mol of an ionic lattice is formed from its gaseous ions

Question 6

what are the two factors that effect lattice enthalpy?

Answer 6

charge and radius

Question 7

what happens to lattice enthalpy as ionic radius increases?

Answer 7

becomes less extothemic

Question 8

what happens to lattice enthalpy as charge increases?

Answer 8

becomes more exothermic

Question 9

what are the two factors that effect enthalpy of hydration?

Answer 9

charge and radius

Question 10

what does a negative ΔS value mean?

Answer 10

products less disordered than reactants

Question 11

what does a positive ΔS value mean?

Answer 11

products more disordered than reactants

Question 12

what does a positive ΔG mean?

Answer 12

reation is not feasible

Question 13

what does a negative ΔG mean?

Answer 13

reaction is feasible