Which law of thermodynamics relates to a system reaching 0 K?
The third law of thermodynamics explains that it is impossible to reach or absolute zero. In fact, the lowest recorded temperature was one-billionth of a kelvin. Moreover, as the temperature approaches absolute zero, theoretically, entropy should approach zero since, particles cease to move at absolute zero. But since it is unattainable, the third law of thermodynamics just serves as a reference point in identifying entropy.
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