LnK -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 For an equilibrium reaction: A + B Till the following graph was obtained. 0.002 C + D 0.004 0.006 0.008 InK: = 1/T -ΔΗΟ AS° RT R + - 0.01

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following equilibrium reaction at 160.00 °C. If 0.420 atm of H2O2(g) is initially present, calculate the equilibrium partial pressures of H2(g), O2(g), and H2O2(g).

KINETICS AND EQUILIBRIUM Using Le Chatelier's Principle to predict the result of changing... Nitrogen and hydrogen react to form ammonia, like this: N₂(g) +3 H₂(g) →2NH₂(g) The reaction is exothermic. Suppose a mixture of N₂, H₂ and NH3 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 NH3 will ? The temperature is lowered. The pressure of N₂ will ? ? go up. go down. not change. shift in equilibrium to the right to the left O (none) to the right to the left O (none) X 1/5

Ff.137.

Determine the final temperature of a reaction that was initially 25 C, given that its equilibrium constant tripled and the reaction’s enthalpy of formation is 60.15 kJ/mol.

Consider the following equilibrium: 2NH, (g) – N, (g) + 3H, (g) AG° = 34. kJ Now suppose a reaction vessel is filled with 5.02 atm of ammonia (NH,) and 9.40 atm of nitrogen (N,) at 159. °C. Answer the following questions about this system: rise Under these conditions, will the pressure of N, tend to rise or fall? fall Is it possible to reverse this tendency adding H2? In other words, if you said the pressure of N, will tend to rise, can that be yes changed to a tendency to fall by adding H,? Similarly, if you said the no pressure of N, will tend to fall, can that be changed to a tendency to rise by adding H2? If you said the tendency can be reversed in the second question, calculate the minimum pressure of H, needed to reverse it. atm Round your answer to 2 significant digits.

Methane and water react to form hydrogen and carbon monoxide, like this: CH4(g) + H₂O(g) → 3 H₂(g) + CO(g) The reaction is endothermic. Suppose a mixture of CH4, H₂O, H₂ and CO has come to equilibrium in a closed reaction vessel. Predict what change, if 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. any, the perturbation change in composition The temperature is raised. The pressure of CH4 will The temperature is lowered. The pressure of H₂ will ? ? ↑ î shift in equilibrium O X to the right to the left (none) to the right to the left (none) Ś