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Entropy

19. Chemical Thermodynamics / Entropy / Problem 1

Which statement correctly defines entropy and has the right example of a process with a positive change in entropy?

A

Entropy is the degree of randomness of a system. The following process has a positive change in entropy: CH₂CH₂OH(l) → CH₃CH₂OH(g) at 25°C.

B

Entropy is the degree of randomness of a system. The following process has a positive change in entropy: CH₃CH₂OH(g) → CH₃CH₂OH(l) at 25°C.

C

Entropy is the total energy change of a system. The following process has a positive change in entropy: CH₃CH₂OH(l) → CH₃CH₂OH(g) at 25°C.

D

Entropy is the total energy change of a system. The following process has a positive change in entropy: CH₃CH₂OH(g) → CH₃CH₂OH(l) at 25°C.

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