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InterviewSolution
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Define entropy. |
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Answer» Entropy:- It is thermodynamics property which measures randomness or disorders of a system. The more is disorder or randomness, higher will be entropy, e.g., Solid < Liquid < Gas. Entropy of a system is state function, i.e., it depends upon initial and final states of the system. When the state of a system changes, the entropy also changes, ΔS = \(\frac{q_{Res}}{T}\) = \(\frac{ΔH_{rev}}{T}\) Where q is the heat supplied isothermally. T is absolute temperature. For a irreversible spontaneous process ΔS = +ve. For a reversible change at equilibrium ΔS = 0. Entropy increases with increase in temperature, decreases with decrease in and temperature. |
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