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Assertion: Two systems, which are in thermal equilibrium with a third system, are inthermal equilibrium with each other.Reason: The heat flows spontaneously from a system at a higher temp to a system ata lower temp

Question

Assertion: Two systems, which are in thermal equilibrium with a third system, are inthermal equilibrium with each other.Reason: The heat flows spontaneously from a system at a higher temp to a system ata lower temp

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Solution

The assertion and the reason are both statements of the Zeroth Law of Thermodynamics. The assertion is a direct statement of the law, which states that if two systems are each in thermal equilibrium with a third system, they are in thermal equilibrium with each other. This is essentially a definition of what it means for two systems to be in "thermal equilibrium".

The reason is related to the Second Law of Thermodynamics, which states that heat flows spontaneously from a system at a higher temperature to a system at a lower temperature until equilibrium is reached. However, it doesn't directly justify the assertion. The assertion is more about the transitive property of thermal equilibrium, not the direction of heat flow.

So, while both statements are true and are fundamental principles of thermodynamics, the reason doesn't directly explain or justify the assertion.

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