A chemical reaction has an enthalpy change, ΔH=−95 kJ mol−1\Delta H = -95\text{ kJ mol}^{-1}ΔH=−95 kJ mol−1, and an entropy change, ΔS=−250 J K−1 mol−1\Delta S = -250\text{ J K}^{-1}\text{ mol}^{-1}ΔS=−250 J K−1 mol−1.
At which of the following temperatures is this reaction thermodynamically feasible?
420 K420\text{ K}420 K
115∘C115^\circ\text{C}115∘C
85∘C85^\circ\text{C}85∘C
390 K390\text{ K}390 K
24 exam-style questions on OCR A A Level Chemistry Enthalpy and entropy. Each one has a worked solution and a mark scheme showing where the marks go.