Consider the Following
Lec Sup 16a
A.) 70.5 kJ
B.) 70.5 J
C.) -70.5 kJ
D.) 58,905 kJ
E.) -40.0 kJ
Lec Sup 16b
A.) -16.6 kJ
B.) 16.6 J
C.) -33.2 kJ
D.) 33.2 kJ
E.) not enough info
Lec Sup 16c
A.) -33.2 kJ
B.) + 33.2 kJ
C.) -16.6 kJ
D.) +16.6 kJ
5) Why does increasing the temperature cause a substance to change in succession from a solid to a
liquid to a gas?
7) Which type of intermolecular attractive
Translational (entire molecule can move in 1 drxn
Vibrational (atoms in molecule more towards and away from each other (bonds
Rotational (atoms spin )
Lower temp less chance of moving like this bc less KE
Third Law of Thermodynamics: The Entropy
1) What determines how fast a reaction will proceed?
2) What determines to what extent the reaction goes to completion
3) What determines whether a reaction will happen without outside intervention
How fast does a reaction proceed?
2 state functions determine spontaneity
Energy transfer between the system and its surroundings.
Enthalpy is a guide to whether a reaction is likely to proceed.
Enthalpy is NOT the only factor that determines whether a reaction p
Spontaneous reactions result in an increase in entropy in the universe.
Rxs that have a large and negative tend to occur spontaneously.
Spontaneity involves BOTH enthalpy and entropy.
Gibbs free energy (G) is a state function defined as:
G = H TS
T is the