Last modified on 21 March 2010, at 15:08

A-level Chemistry/OCR (Salters)/Entropy

 \Delta S_{\mbox{total}} = \Delta S_{\mbox{sys}} + \Delta S _{\mbox{surr}} \,\!


 \Delta S_{\mbox{surr}} = \frac{ - \Delta H_{\mbox{sys}} }{T}


 \Delta S_{\mbox{total}} > 0 \,\!