The steam reforming reaction of methane follows this chemical equation: CHA(g) + H50(g) - CO(g) + 3 H2(g) A H° = +193 kJ/mol At 298 K the reaction lies far to the reactant side with a very small equilibrium constant of 2.35 × 10-23. To obtain a significant amount of the desired hydrogen gas product, the reaction is operated at very high temperatures. What is the equilibrium constant at 1100 K?

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Ammonia and oxygen react to form nitrogen and water, like this: 4NH, (g)+30,(g) 2N,(g)+6H,O(g) Suppose a mixture of NH2, O2, N, and H,0 has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation change in composition shift in equilibrium O to the right The pressure of NH3 will Some N, is added. O to the left The pressure of Oz will ? O (none) O to the right The pressure of O, will ? O to the left Some NH, is removed. The pressure of N2 will O (none) Submit Assignme Continue MacBook Air FI0 F8 吕口 D00 000 F4 F5 F3 F2 %

Nitrogen monoxide and ozone react to form nitrogen dioxide and oxygen, like this: NO(g) + O₂(g) → NO₂(g) + O₂(g) The reaction is exothermic. Suppose a mixture of NO, O3, NO₂ and O₂ has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation change in composition The temperature is raised. The pressure of O3 will The temperature is lowered. ? The pressure of NO₂ will ? shift in equilibrium O to the right to the left O (none) O to the right to the left O (none) X