Chem 116 Exam 3 questions with answers |\ |\ |\ |\ |\ |\
The first law of thermodynamics can be given as -
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CORRECT ANSWERS ✔✔DeltaE = q+w |\ |\ |\ |\
A reaction that is spontaneous as written - CORRECT
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ANSWERS ✔✔will proceed without outside intervention |\ |\ |\ |\ |\
Of the following (S, H, q, E, T), only ___ is NOT a state
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function. - CORRECT ANSWERS ✔✔q |\ |\ |\ |\
When a system is at equilibrium - CORRECT ANSWERS
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✔✔the process is not spontaneous in either direction
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A reversible process is one that - CORRECT ANSWERS
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✔✔an be reversed with no net change in either system or
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surroundings.
The thermodynamic quantity that expresses the degree
|\ |\ |\ |\ |\ |\ |\
of disorder in a system is - CORRECT ANSWERS
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✔✔entropy
For an isothermal process, DeltaS is - CORRECT ANSWERS
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✔✔qrev/T
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,Which one of the following is always positive when a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
spontaneous process occurs? - CORRECT ANSWERS |\ |\ |\ |\ |\ |\
✔✔DeltaSuniverse
The entropy of the universe is - CORRECT ANSWERS
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✔✔continually increasing |\
The second law of thermodynamics states that -
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CORRECT ANSWERS ✔✔for any spontaneous process, the
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entropy of the universe increases
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the normal boiling point of water is 100 C and it's molar
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
enthalpy of vaporization is 40.67 kj/mol. What is the
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change in entropy in the system J/K when 39.3 grams of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
steam at 1 atm condenses to a liquid at the normal
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
boiling point? - CORRECT ANSWERS ✔✔-238
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DeltaS is positive for the reaction - CORRECT ANSWERS
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✔✔BaF2(s) -> Ba(aq) + 2F(aq) |\ |\ |\ |\
Which one of the following processes produces a
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decrease in the entropy of the system? - CORRECT
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ANSWERS ✔✔freezing water to form ice|\ |\ |\ |\ |\
, DeltaS is positive for the reaction - CORRECT ANSWERS
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✔✔2SO3(g) -> 2SO2(g) + O2(g) |\ |\ |\ |\
Which reaction produces a decrease in the entropy of the
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system? - CORRECT ANSWERS ✔✔2H2(g) + O2(g) ->
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2H2O (l) |\
Which reaction produces an increase in the entropy of the
|\ |\ |\ |\ |\ |\ |\ |\ |\
system? - CORRECT ANSWERS ✔✔CO2(s) -> CO2(g)
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Which of the following processes produces a decrease of
|\ |\ |\ |\ |\ |\ |\ |\ |\
the entropy of the system? - CORRECT ANSWERS
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✔✔dissolving oxygen in water |\ |\ |\
DeltaS is negative for the reaction - CORRECT ANSWERS
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✔✔2SO2(g) + O2(g) -> 2SO3(g) |\ |\ |\ |\
DeltaS is positive for the reaction - CORRECT ANSWERS
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✔✔2H2O(g) -> 2H2(g) + O2(g) |\ |\ |\ |\
DeltaS is negative for the reaction - CORRECT ANSWERS
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✔✔Mg(NO3)2(aq) + 2NaOH(aq) -> Mg(OH)2(s) + |\ |\ |\ |\ |\ |\
2NaNO2(aq)
The first law of thermodynamics can be given as -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔DeltaE = q+w |\ |\ |\ |\
A reaction that is spontaneous as written - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔will proceed without outside intervention |\ |\ |\ |\ |\
Of the following (S, H, q, E, T), only ___ is NOT a state
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
function. - CORRECT ANSWERS ✔✔q |\ |\ |\ |\
When a system is at equilibrium - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔the process is not spontaneous in either direction
|\ |\ |\ |\ |\ |\ |\
A reversible process is one that - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔an be reversed with no net change in either system or
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
surroundings.
The thermodynamic quantity that expresses the degree
|\ |\ |\ |\ |\ |\ |\
of disorder in a system is - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔entropy
For an isothermal process, DeltaS is - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔qrev/T
|\
,Which one of the following is always positive when a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
spontaneous process occurs? - CORRECT ANSWERS |\ |\ |\ |\ |\ |\
✔✔DeltaSuniverse
The entropy of the universe is - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔continually increasing |\
The second law of thermodynamics states that -
|\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔for any spontaneous process, the
|\ |\ |\ |\ |\ |\ |\
entropy of the universe increases
|\ |\ |\ |\
the normal boiling point of water is 100 C and it's molar
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
enthalpy of vaporization is 40.67 kj/mol. What is the
|\ |\ |\ |\ |\ |\ |\ |\ |\
change in entropy in the system J/K when 39.3 grams of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
steam at 1 atm condenses to a liquid at the normal
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
boiling point? - CORRECT ANSWERS ✔✔-238
|\ |\ |\ |\ |\
DeltaS is positive for the reaction - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔BaF2(s) -> Ba(aq) + 2F(aq) |\ |\ |\ |\
Which one of the following processes produces a
|\ |\ |\ |\ |\ |\ |\ |\
decrease in the entropy of the system? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔freezing water to form ice|\ |\ |\ |\ |\
, DeltaS is positive for the reaction - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔2SO3(g) -> 2SO2(g) + O2(g) |\ |\ |\ |\
Which reaction produces a decrease in the entropy of the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
system? - CORRECT ANSWERS ✔✔2H2(g) + O2(g) ->
|\ |\ |\ |\ |\ |\ |\ |\
2H2O (l) |\
Which reaction produces an increase in the entropy of the
|\ |\ |\ |\ |\ |\ |\ |\ |\
system? - CORRECT ANSWERS ✔✔CO2(s) -> CO2(g)
|\ |\ |\ |\ |\ |\ |\
Which of the following processes produces a decrease of
|\ |\ |\ |\ |\ |\ |\ |\ |\
the entropy of the system? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔dissolving oxygen in water |\ |\ |\
DeltaS is negative for the reaction - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔2SO2(g) + O2(g) -> 2SO3(g) |\ |\ |\ |\
DeltaS is positive for the reaction - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔2H2O(g) -> 2H2(g) + O2(g) |\ |\ |\ |\
DeltaS is negative for the reaction - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Mg(NO3)2(aq) + 2NaOH(aq) -> Mg(OH)2(s) + |\ |\ |\ |\ |\ |\
2NaNO2(aq)
