Q18 / 155 · WBJEE 2024 · Chemistry

For a spontaneous process, the incorrect statement is

  • Correct answer
    A
    $\left(\Delta G_{\text {system }}\right)_{T, P}\gt0$
  • B
    $\left(\Delta \mathrm{S}_{\text {system }}\right)_{+}\left(\Delta \mathrm{S}_{\text {surroundings }}\right)\gt0$
  • C
    $\left(\Delta \mathrm{G}_{\text {system }}\right)_{\mathrm{T}, \mathrm{P}} \lt 0$
  • D
    $\left(\Delta U_{\text {system }}\right)_{\mathrm{S}, \mathrm{V}} \lt 0$

Solution

For spontaneous process $\begin{aligned} & *\left(\Delta \mathrm{G}_{\text {system }}\right)_{P, T} \lt 0 \\ & * \Delta \mathrm{S}_{\text {universe }}=\Delta \mathrm{S}_{\text {system }}+\Delta \mathrm{S}_{\text {surrounding }}\gt0 \\ & *\left(\Delta \mathrm{U}_{\text {system }}\right)_{\mathrm{S}, \mathrm{V}} \lt 0\end{aligned}$

Hence, the correct answer is option: 'A'.

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