Two independent processes occur simultaneously in an isolated system: Process X: ,…

CHEMISTRY · Multi-part · CBSE · Chemistry · Thermodynamics · Thermodynamics

Problem

Two independent processes occur simultaneously in an isolated system: Process X:

\Delta S_{\text{sys}} = +18\,\text{J}\,\text{K}^{-1}

\Delta S_{\text{surr}} = -4\,\text{J}\,\text{K}^{-1}

Process Y:

\Delta S_{\text{sys}} = -12\,\text{J}\,\text{K}^{-1}

\Delta S_{\text{surr}} = +6\,\text{J}\,\text{K}^{-1}

(i) For each process taken separately, decide whether it is spontaneous, reversible or impossible. (ii) Find the overall

\Delta S_{\text{univ}}

when both processes occur together and state whether the combined process is allowed by the second law.