Equilibrium constant from Gibbs energy

Suppose carbonyl dibromide were made by a free-radical chain reaction of carbon monoxide, $\ce{CO}$, with bromine vapour, $\ce{Br2}$, started by ultraviolet light. The questions below treat this hypothetical route with the bond-enthalpy model and the entropy…

(i) An equilibrium mixture in a 25.0 $\mathrm{dm^3}$ reactor at 500 °C contains 15.0 mol $\ce{N2}$, 22.5 mol $\ce{H2}$ and 5.25 mol $\ce{NH3}$. Calculate the equilibrium constant, $K$, for the reaction. (ii) The volume of the reactor containing the equilibrium…

(i) Calculate the enthalpy change, $\Delta H$, for the overall synthesis of propyl ethanoate from propane and ethane shown above. Use section 12 of the data booklet. (ii) Two students each calculated the enthalpy change for the reaction between propan-1-ol and…

Carbon monoxide reacts with chlorine to form phosgene, $\ce{COCl2}$. $\ce{CO(g) + Cl2(g) <=> COCl2(g)}$ $K = 2.75 \times 10^{3}$ at 45 °C $\Delta G = -RT\ln K$ $R = 8.31\ \mathrm{J\,K^{-1}\,mol^{-1}}$ What is the Gibbs energy change, $\Delta G$, in…