Question

Which of the following statements must be true for the entropy of a pure solid to be zero? a. Temperature must be $0 \mathrm{~K}$. b. The solid must be perfectly ordered c. The solid must be an element. d. The solid must be crystalline, not amorphous

Name: Problem 135, Chapter 4: Physical Chemistry for IIT JEE
Uploaded: 2022-02-17T15:33:06-08:00
Duration: 1 min 47 s
Channel: Hunza Gilgit
Description: Which of the following statements must be true for the entropy of a pure solid to be zero? a. Temperature must be 0 K. b. The solid must be perfectly ordered c. The solid must be an element. d. The solid must be crystalline, not amorphous

   Which of the following statements must be true for the entropy of a pure solid to be zero?
a. Temperature must be $0 \mathrm{~K}$.
b. The solid must be perfectly ordered
c. The solid must be an element.
d. The solid must be crystalline, not amorphous

Physical Chemistry for IIT JEE

Atul Singha 1st Edition

Chapter 4, Problem 135

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Solved by Expert Hunza Gilgit

02/17/2022

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It is a fundamental concept in thermodynamics and statistical mechanics. Show more…

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Which of the following statements must be true for the entropy of a pure solid to be zero? a. Temperature must be $0 \mathrm{~K}$. b. The solid must be perfectly ordered c. The solid must be an element. d. The solid must be crystalline, not amorphous

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Key Concepts

Third Law of Thermodynamics

This principle states that the entropy of a perfect crystal approaches zero as the temperature approaches absolute zero. It underscores the idea that, at 0 K, a system with a single, unique microstate has zero entropy.

Absolute Zero Temperature

Absolute zero (0 K) is the point at which molecular motion ceases, and it is a necessary condition for realizing the state where entropy is exactly zero, according to the third law.

Perfect Crystalline Order

A perfect crystalline structure is one in which the atoms or molecules are arranged in an entirely ordered and regular pattern, resulting in a single microstate. This perfect order is essential to ensure that no residual entropy remains in the system.

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