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(C) In a reversible adiabatic process,there is no exchange of heat between the system and the surroundings,so $dq_{rev} = 0$.By the definition of entr

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$\Delta S = 0$

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(C) In a reversible adiabatic process,there is no exchange of heat between the system and the surroundings,so $dq_{rev} = 0$.By the definition of entropy change,$dS = \frac{dq_{rev}}{T}$.Since $dq_{rev} = 0$,it follows that $dS = 0$.Therefore,the change in entropy $(\Delta S)$ for a reversible adiabatic process is zero.

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

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