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Part A At the particle level, the ENTROPY of a SYSTEM can be defined in two part

ID: 850440 • Letter: P

Question

Part A

At the particle level, the ENTROPY of a SYSTEM can be defined in two particular ways: (1) RANDOMNESS OF POSITION: the extent of randomness of the positions of particles, and how far the particles can spread out in a volume. (More options of physical arrangement signify greater entropy.) Entropy increases with the number of particles (or moles of particles in a container o More independently moving particles correspond to more possible arrangements More microstates/greater disorder Entropy increases with the volume particles occupy o Intermolecular Attractions: The fewer intermolecular attractions, the greater the volume the occupy: s

Explanation / Answer

Part A

1)

Entropy : Increases

Rule Applied : Rule (i)

2)

Entropy : Increases

Rule Applied : Rule (i)

3)

Entropy : Decreases

Rule Applied : Rule (i)

4)

Entropy : Decreases

Rule Applied : Rule (i)

5)

Entropy : Increases

Rule Applied : Rule (iii)

6)

Entropy : Increases

Rule Applied : Rule (i)

7)

Entropy : Decreases

Rule Applied : Rule (i)

Part B

There are more number of moles of gaseous products than reactants

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