Correct Answer - Option 4 : heat change / absolute temperature
Concept:
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Entropy is a measure of disturbance, higher the entropy with the positive sign, more are the chances of the reaction taking place spontaneously
\(S = \frac{{{\rm{Δ }}Q}}{T}\)
Where S is entropy, Δ Q is heat exchanged and T is absolute temperature.
- The SI unit of Entropy is Joule per Kelvin (J/K).
EXPLANATION:
- Heat exchange (Δ Q) is a type of energy.
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Joule (J) is the SI unit of Work or Energy.
- Kelvin is the SI unit of temperature
So SI unit of entropy (S) = Unit of energy/ Unit of temperature = J/K