Enthalpy, Entropy, and Free Energy

Question 1

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

Revolt · Accepted Answer

Second law applies.

Question 2

an open beaker containing an aqueous solution

Revolt · Accepted Answer

Second law does not apply.

Question 3

a sealed glass flask that is not insulated

Revolt · Accepted Answer

Second law does not apply.

Question 4

the Earth

Revolt · Accepted Answer

Second law does not apply.

Question 5

Use this information to calculate Grxn. = kJ

Revolt · Accepted Answer

-2,453.1

Question 6

Identify each of these reactions as being spontaneous or nonspontaneous.

Revolt · Accepted Answer

spontaneous

Question 7

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

Revolt · Accepted Answer

spontaneous at all temperatures

Question 8

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

Revolt · Accepted Answer

spontaneous only at high temperature

Question 9

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

Revolt · Accepted Answer

spontaneous only at low temperature

Question 10

Question 10

Revolt · Accepted Answer

spontaneous

Enthalpy, Entropy, and Free Energy Answers

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