Complete the following sentences on predicting the relative entropy of a system.
ID: 486395 • Letter: C
Question
Complete the following sentences on predicting the relative entropy of a system.
The words are: decreases, equal to, increases, less than, greater than
1. Temperature Changes: for a given substance, S° __________as the temperature increases.
2. Physical States and Changes of State: as the freedom of motion of the substance ____________ , the entropy increases. The size of the entropy change is such that S°vap is much ____________ S°fus .
3. Dissolving a Gas: when a gas dissloves in a liquid, the entropy always ____________ but when disolved in another gas it ____________ .
4. Dissolving a Solid or a Liquid: the entropy of a dissolved solid or liquid is always ____________ the entropy of the pure substance.
5. Atomic Size: the entropy of atoms generally ____________ down a group since the number of microstates ____________ .
6. Molecular Complexity: the entropy of molecules ____________ as they become more complex and the number of atoms ____________ .
Explanation / Answer
1. Temperature Changes: for a given substance, S° increases as the temperature increases.
2. Physical States and Changes of State: as the freedom of motion of the substance increases, the entropy increases. The size of the entropy change is such that S°vap is much greater than S°fus .
3. Dissolving a Gas: when a gas dissloves in a liquid, the entropy always decreases but when disolved in another gas it increases .
4. Dissolving a Solid or a Liquid: the entropy of a dissolved solid or liquid is always greater than the entropy of the pure substance.
5. Atomic Size: the entropy of atoms generally increases down a group since the number of microstates increases.
6. Molecular Complexity: the entropy of molecules increases as they become more complex and the number of atoms increases .
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