The spontaneity of a process depends on several factors; one of the several factors is entropy. When the change in the total entropy is positive, the process is said to be spontaneous. Concept introduction: Entropy is referred to as the 'state of disorder' of a system. Also, entropy is a measure of the energy of atoms and molecules in a process and can be defined in terms of statistical probabilities of a system or in terms of the other thermodynamic quantities. When the change in the total entropy is negative, the process is said to be non-spontaneous, in contrast, when the change in entropy is positive, the process is said to be spontaneous. Δ S t o t a l = Δ S s y s t e m + Δ S s u r r o u n d i n g s The change in entropy occurs during phase transitions, precipitation reactions etc. The change in entropy of the system is defined as the difference between the entropies of the final and initial states: Δ S = S f − S i .

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Chapter 10, Problem 9CO

Interpretation Introduction

Interpretation:

The spontaneity of a process depends on several factors; one of the several factors is entropy. When the change in the total entropy is positive, the process is said to be spontaneous.

Concept introduction:

Entropy is referred to as the 'state of disorder' of a system. Also, entropy is a measure of the energy of atoms and molecules in a process and can be defined in terms of statistical probabilities of a system or in terms of the other thermodynamic quantities.

When the change in the total entropy is negative, the process is said to be non-spontaneous, in contrast, when the change in entropy is positive, the process is said to be spontaneous.

ΔStotal=ΔSsystem+ΔSsurroundings

The change in entropy occurs during phase transitions, precipitation reactions etc.

The change in entropy of the system is defined as the difference between the entropies of the final and initial states:

ΔS = Sf − Si.

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