A-level Chemistry/OCR (Salters)/Entropy

$\mathrm{\Delta }{S}_{\text{total}}=\mathrm{\Delta }{S}_{\text{sys}}+\mathrm{\Delta }{S}_{\text{surr}}$

$\mathrm{\Delta }{S}_{\text{surr}}=\frac{-\mathrm{\Delta }{H}_{\text{sys}}}{T}$

$\mathrm{\Delta }{S}_{\text{total}}>0$