(a)
Interpretation:
The reason for the fact that it is impossible to transfer heat from a cold source to the hot sink without some work done has to be stated.
Concept introduction:
The term entropy is used to represent the randomness in a system. When a system moves from an ordered arrangement to a less order arrangement, then the entropy of the system increases. The second law of
(b)
Interpretation:
The magnitude of work need to transfer heat of magnitude
Concept introduction:
The efficiency of a machine is defined as the ratio of fruitful output and total input. The efficiency of a machine is used to determine the effectiveness of the machine. When the efficiency of the machine is high, the machine is very efficient. The efficiency of a machine cannot be

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Chapter 3 Solutions
ATKINS' PHYSICAL CHEMISTRY
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