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What is third law of thermodynamics …

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What is third law of thermodynamics ??
  • 2 answers

Čůťê Ğīřł ? ? 6 years, 10 months ago

According to this law , at absolute zero temperature the entropy of a perfectly crystalline substance is taken as zero ..?

Yogita Ingle 6 years, 10 months ago

The third law of thermodynamics states that ” The entropy of a perfect crystal at absolute zero temperature is exactly equal to zero.”

At absolute zero that is zero Kelvin, the system is said to possess minimum energy. This statement of the third law of thermodynamics holds true only when the perfect crystal has minimum energy state. If the system has minimum disturbances it means that the temperature has approached zero Kelvin where molecular motion seizes to exist. Standard molar entropy is defined as the entropy per mole of a substance at standard conditions and specified temperature.

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