Which of the following statements is incorrec | vedclass

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(C) For any process,the entropy change of the universe is given by $\Delta S_{univ} = \Delta S_{syst} + \Delta S_{surr}$.For a reversible process,$\De

Vedclass · Accepted Answer

In an adiabatic process,$\Delta S_{syst} = 0$ is not always true

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(C) For any process,the entropy change of the universe is given by $\Delta S_{univ} = \Delta S_{syst} + \Delta S_{surr}$.For a reversible process,$\Delta S_{univ} = 0$.For an irreversible (spontaneous) process,$\Delta S_{univ} > 0$.In an adiabatic process,$\Delta S_{syst}$ is zero only if the process is reversible. If the adiabatic process is irreversible,$\Delta S_{syst} > 0$. Thus,the statement that $\Delta S_{syst} = 0$ always in an adiabatic process is incorrect.For an isochoric process $(V = 	ext{constant})$,the entropy change is given by $\Delta S_{syst} = nC_v \ln(\frac{T_2}{T_1})$,which is correct.

Which of the following statements is incorrect when a system consisting of an ideal gas undergoes a change of state?

Similar Questions

Which one of the following involves a decrease in entropy?

The standard molar entropy of $H_{2}O_{(l)}$ is $70 \ J \ K^{-1} \ mol^{-1}$. Will the standard molar entropy of $H_{2}O_{(s)}$ be more or less than $70 \ J \ K^{-1} \ mol^{-1}$?

Fill in the blanks:
$(i)$ The entropy of one mole of a substance at a fixed temperature and standard state is called ........ .
$(ii)$ The unit of molar entropy is .......... .
$(iii)$ The process of conversion of graphite into diamond is of ........ type.

Give the mathematical equation for entropy change.

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