Which state functions are required to understand the second law of thermodynamics?

  • A
    Enthalpy and Internal Energy
  • B
    Entropy and Gibbs Free Energy
  • C
    Work and Heat
  • D
    Pressure and Volume

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The enthalpy change for the conversion of water into vapor at $27^\circ C$ is $30 \ kJ/mol$. The entropy change for this process in $J/mol \ K$ is:

For a reversible adiabatic expansion of an ideal gas,which of the following is equal to zero?

For which of the following processes is $\Delta S$ negative?

Considering entropy $(S)$ as a thermodynamic parameter,the criterion for the spontaneity of any process is

The process with negative entropy change is

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