Spontaneity: Entropy And Free Energy

Question 0

Entropy

Answer 0

Disorder of a system

Question 1

Enthalpy

Answer 1

Heat content (exothermic reactions are favored)

Question 2

The greater the disorder the large the

Answer 2

Entropy

Question 3

When a pure solid or liquid dissolves in a solvent there is an increase in _______ with an exception to _______

Answer 3

Entropy

Carbonates

Question 4

When gas molecules escape from a solvent there is an increase in

Answer 4

Entropy

Question 5

Entropy increases with an increase of molecular complexity due to

Answer 5

An increase in moving electrons

Question 6

A spontaneous reaction occurs when delta S universe is

Answer 6

Positive

Question 7

A reaction is non spontaneous when delta S universe is

Answer 7

Negative

Question 8

Delta G^o rxn =

Answer 8

delta G^o (products) - delta G^o (reactants)

Question 9

Delta G =

Given delta h and delta s

Answer 9

Delta H - (T)(delta S)

Question 10

Delta G =

Given the reaction quotient

Answer 10

Delta G^o + RT ln(Q)

Question 11

delta G^o =

Given K value

Answer 11

-RTlnK

Question 12

The definition of delta G^o is

Answer 12

Free energy at standard conditions

Question 13

Delta G^o =

Given number of moles

Answer 13

-nFE^o

Question 14

Faradays constant

Answer 14

96,485 Coulombs/mole e-

F

Question 15

E^o

Answer 15

Standard voltage

Question 16

One volt =

Answer 16

Joule/coulomb

Question 17

Delta S universe =

Answer 17

Delta S system + Delta S surroundings

Question 18

Delta S^o surroundings =

Answer 18

q surroundings/T
Or
Delta H^o surroundings/T

Question 19

delta H system =

Answer 19

-(delta H surroundings)

Question 20

A negative delta G indicates a reaction is

Answer 20

Spontaneous

Question 21

What ultimately decides whether a reaction is spontaneous or not is

Answer 21

Gibbs free energy

Question 22

Delta S^o rxn =

Answer 22

Delta S^o (products) - delta S^o (reactants)

Question 23

The second law of thermodynamics

Answer 23

The universe is constantly increasing disorder

Question 24

The third law of thermodynamics

Answer 24

The entropy of a perfect crystal at 0K is zero