AnswersFL-2003350-Chemistry 1 Honors - Teacher Directed ResourceEnthalpy, Entropy, and Free Energy

Enthalpy, Entropy, and Free Energy Answers

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Choose the system from each pair that likely has the higher entropy.

A
ice
B
liquid water
2
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Question text not available

A
liquid water at 10°C
B
liquid water at 90°C
3

Question text not available

A
1 mol NaBr dissolved in 1 L water
B
1 mol solid NaBr and 1 L pure water in separate containers
4

Question text not available

A
3 mol N2 gas and 2 mol O2 gas in separate containers
B
3 mol N2 gas and 2 mol O2 gas mixed together
5

The Second Law of Thermodynamics states that the overall entropy of the universe (or any other isolated system) can never decrease. Identify the systems to which the Second Law of Thermodynamics would apply.a reaction vessel that is completely sealed and insulated

A
Second law applies.
B
Second law does not apply.
6

Use this information to calculate Grxn. = kJ

Question illustration
A
2,453.1
B
-1,616.7
C
-2,453.1
7

Identify each of these reactions as being spontaneous or nonspontaneous.

Question illustration
A
spontaneous
B
nonspontaneous
8

2N2O(g) 2N2(g) + O2(g) H 0

Question illustration
A
spontaneous at all temperatures
B
nonspontaneous at all temperatures
C
spontaneous only at high temperature
D
spontaneous only at low temperature
9

an open beaker containing an aqueous solution

A
Second law applies.
B
Second law does not apply.
10

Question text not available

Question illustration
A
spontaneous
B
nonspontaneous
11

H2O(l) H2O(g) H > 0; S > 0

Question illustration
A
spontaneous at all temperatures
B
nonspontaneous at all temperatures
C
spontaneous only at high temperature
D
spontaneous only at low temperature
12

a sealed glass flask that is not insulated

A
Second law applies.
B
Second law does not apply.
13

Question text not available

Question illustration
A
spontaneous
B
nonspontaneous
14

3O2(g) 2O3(g) H > 0; S < 0

Question illustration
A
spontaneous at all temperatures
B
nonspontaneous at all temperatures
C
spontaneous only at high temperature
D
spontaneous only at low temperature
15

the Earth

A
Second law applies.
B
Second law does not apply.
16

C(s) + 2Cl2(g) CCl4(g) H < 0; S < 0

Question illustration
A
spontaneous at all temperatures
B
nonspontaneous at all temperatures
C
spontaneous only at high temperature
D
spontaneous only at low temperature

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Enthalpy, Entropy, and Free Energy