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what is the usual definition of entropy ? What is the unit of entropy ? |
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Answer» Solution :(i) Entropy is a thermodynamic state function that is a measure of the RANDOMNESS or disorderliness of the system . (ii) For a reversible CHANGE TAKING PLACE at a constant temperature (T), the change in entropy (`DeltaS`) of the system is equal to heat energy absorbed or evolved (q) by the system divided by the constant temperature (T) `DeltaS_"SYS"=q_"rev"/T` (iii) SIunit of entropy is `JK^(-1)` |
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