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## For the following questions, use the reaction for the formation of C2H4 (g) from its elements C (s) and H2 (g). For this reaction, the following thermodynamic data were collected at 298 K: ΔfHo (C2H4) = 50 kJ/mol, So (C2H4) = 200 J/mol*K, So (C) = 5.0 J/mol*K, and So (H2) = 130 J/mol*K a) write a balanced chemical reaction (whole number coefficients) for this process, and write out the expression for reaction quotient Q using partial pressures. b) Without doing calculations, explain how the progression of the reaction will change (more reactants/more products) with respect to 1) temperature decreasing, and 2) pressure decreasing. c) Calculate the equilibrium constant at 298 K. d) Assuming that ΔfHo is independent of temperature, calculate K at 150 oC.

For the following questions, use the reaction for the formation of C2H4 (g) from its elements C (s) and H2 (g). For this reaction, the following thermodynamic data were collected at 298 K: ΔfHo (C2H4) = 50 kJ/mol, So (C2H4) = 200 J/mol*K, So (C) = 5.0 J/mol*K, and So (H2) = 130 J/mol*K

a) write a balanced chemical reaction (whole number coefficients) for this process, and write out the expression for reaction quotient Q using partial pressures.

b) Without doing calculations, explain how the progression of the reaction will change (more reactants/more products) with respect to 1) temperature decreasing, and 2) pressure decreasing.

c) Calculate the equilibrium constant at 298 K.

d) Assuming that ΔfHo is independent of temperature, calculate K at 150 oC.

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