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What does the second law of thermodynamics define?
  • a)
    entropy
  • b)
    enthalpy
  • c)
    heat
  • d)
    work
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
What does the second law of thermodynamics define?a)entropyb)enthalpy...
There are four laws to thermodynamics
Zeroth law of thermodynamics – If two thermodynamic systems are each in thermal equilibrium with a third, then they are in thermal equilibrium with each other.
The first law of thermodynamics – Energy can neither be created nor destroyed. It can only change forms. In any process, the total energy of the universe remains the same.
For a thermodynamic cycle, the net heat supplied to the system equals the net work done by the system.
δQ = ΔU + δW
The second law of thermodynamics – The entropy of an isolated system not in equilibrium will tend to increase over time, approaching a maximum value at equilibrium.
ΔS = ΔQ/T
ΔSTotal = ΔSSystem + ΔSsurrounding
The second law of thermodynamics introduces the concept of entropy.
Third law of thermodynamics – As the temperature approaches absolute zero, the entropy of a system approaches a constant minimum.
ΔST = 0K = 0
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What does the second law of thermodynamics define?a)entropyb)enthalpyc)heatd)workCorrect answer is option 'A'. Can you explain this answer?
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