FINAL EXAM CHEM 162 QUESTIONS
AND ANSWERS
Entropy - Correct Answers -the measure of energy dispersal/randomization
S = K ln W - Correct Answers -Entropy
Predicting how the enthalpy, entropy, and temperature for a reaction determine
if the reaction will be spontaneous. - Correct Answers -
Calculate ΔG for non-spontaneous reactions - Correct Answers -ΔGrxn = ΔG0rxn +
RT*lnQ
Spontaneity based on the sign of ΔG - Correct Answers -- ΔG = spontaneous
1st Law of Thermodynamics - Correct Answers -"Law of Energy Conservation": E
cannot be created or destroyed.
ΔE = q + w
2nd Law of Thermodynamics - Correct Answers -"Law of Increased Entropy": E is used
then converted & left as entropy.
For spont. processes: ΔSuniv > 0
3rd Law of Thermodynamics - Correct Answers -The E of a perfect crystal is zero when
the temperature is equal to absolute zero.
Oxidation Rule: O# in a free element = _?_ - Correct Answers –Zero
Standard electrochemical (reduction) potential - Correct Answers -1M, 298K, 1atm -
oxidizing or reducing agent strength
Salt bridge - Correct Answers -allows a flow of ions that neutralizes the charge buildup
in the solution
Strong Reducing agent - Correct Answers -Oxidizes easily (easily donates e- to other
molecules), LOW E0, metals
Oxidation Rule: the sum of O# in a molecule = _?_ - Correct Answers -Zero
AND ANSWERS
Entropy - Correct Answers -the measure of energy dispersal/randomization
S = K ln W - Correct Answers -Entropy
Predicting how the enthalpy, entropy, and temperature for a reaction determine
if the reaction will be spontaneous. - Correct Answers -
Calculate ΔG for non-spontaneous reactions - Correct Answers -ΔGrxn = ΔG0rxn +
RT*lnQ
Spontaneity based on the sign of ΔG - Correct Answers -- ΔG = spontaneous
1st Law of Thermodynamics - Correct Answers -"Law of Energy Conservation": E
cannot be created or destroyed.
ΔE = q + w
2nd Law of Thermodynamics - Correct Answers -"Law of Increased Entropy": E is used
then converted & left as entropy.
For spont. processes: ΔSuniv > 0
3rd Law of Thermodynamics - Correct Answers -The E of a perfect crystal is zero when
the temperature is equal to absolute zero.
Oxidation Rule: O# in a free element = _?_ - Correct Answers –Zero
Standard electrochemical (reduction) potential - Correct Answers -1M, 298K, 1atm -
oxidizing or reducing agent strength
Salt bridge - Correct Answers -allows a flow of ions that neutralizes the charge buildup
in the solution
Strong Reducing agent - Correct Answers -Oxidizes easily (easily donates e- to other
molecules), LOW E0, metals
Oxidation Rule: the sum of O# in a molecule = _?_ - Correct Answers -Zero
