12.a下列反應式均列有該反應之\(\Delta H_{298}^0(J)\)及\(\Delta S_{298}^0 (\text{J K}^{-1})\)值，試問何種反應在任何溫度下都     不可能     進行自發反應？
(A)\(\text{H}_2(\text{g})+\text{Cl}_2(\text{g}) \rightarrow 2\text{HCl}[\Delta H_{298}^0 = -185, \Delta S_{298}^0 = 141]\)
(B)\( \text{NH}_4\text{Cl(s)} \rightarrow \text{NH}_3\text{(g)} + \text{HCl(g)} [\Delta H_{298}^0 = 176, \Delta S_{298}^0 = 284] \)
(C)\(2\text{SO}_2(\text{g}) + \text{O}_2(\text{g}) \rightarrow 2\text{SO}_3(\text{g}) [\Delta H_{298}^0 = -198, \Delta S_{298}^0 = 187]\)
(D)\(3\text{O}_2(\text{g}) \rightarrow 2\text{O}_3(\text{g}) [\Delta H_{298}^0 = 286, \Delta S_{298}^0 = -137]\)