Consider the dissociation of methane, CH4 (g), into elements H2 (g) and C (s, graphite). Given that ΔfHo (CH4, g) = −74.85 kJ mol − 1 and that ΔfSo (CH4, g) = −80.67 J K − 1 mol − 1 to 298 K, A. Calculate the value of the equilibrium constant at 298 K. b. Assuming that ΔfHo is independent of temperature, calculate K at 50 ° C. c. Calculate the degree of dissociation (ndissociated / nnon-dissociated), α, of methane at 25 ° C and at a total pressure of 0.010 bar. d. Without doing numerical calculations, explain how the degree of
Consider the dissociation of methane, CH4 (g), into elements H2 (g) and C (s, graphite). Given that ΔfHo (CH4, g) = −74.85 kJ mol − 1 and that ΔfSo (CH4, g) = −80.67 J K − 1 mol − 1 to 298 K, A. Calculate the value of the equilibrium constant at 298 K. b. Assuming that ΔfHo is independent of temperature, calculate K at 50 ° C. c. Calculate the degree of dissociation (ndissociated / nnon-dissociated), α, of methane at 25 ° C and at a total pressure of 0.010 bar. d. Without doing numerical calculations, explain how the degree of
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Consider the dissociation of methane, CH4 (g), into elements H2 (g) and C (s, graphite). Given that ΔfHo (CH4, g) = −74.85 kJ mol − 1 and that ΔfSo (CH4, g) = −80.67 J K − 1 mol − 1 to 298 K,
A. Calculate the value of the equilibrium constant at 298 K.
b. Assuming that ΔfHo is independent of temperature, calculate K at 50 ° C.
c. Calculate the degree of dissociation (ndissociated / nnon-dissociated), α, of methane at 25 ° C and at
a total pressure of 0.010 bar.
d. Without doing numerical calculations, explain how the degree of dissociation of
this reaction will change depending on the pressure and temperature
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