Q7. Hydrogen can be manufactured from the reaction of steam with methane. CH:(g) + H2O(g) CO(g) + 3H2(g) (a) The table contains some enthalpy of formation and entropy data. Substance AH.I kJ mol- S* IJK- mol- CH:(g) -75 186 H:O(g) -242 189 Co(g) -111 198 H:(g) 131 CO:(g) -394 214 (i) Use data from the table to calculate the enthalpy change, AH, for the reaction of steam with methane. Page 10 of 12 (ii) Use data from the table to calculate the entropy change, AS, for the reaction of steam with methane. (b) Use your values of AH and AS from parts (a)(i) and (a)(ii) to calculate the temperature above which this reaction is feasible. (c) The temperature used for this manufacture of hydrogen is usually about 1300 K. Suggest one reason, other than changing the position of equilibrium, why this temperature is used rather than the value that you calculated in part (b).

Q7. Hydrogen can be manufactured from the reaction of steam with methane. CH:(g) + H2O(g) CO(g) + 3H2(g) (a) The table contains some enthalpy of formation and entropy data. Substance AH.I kJ mol- S* IJK- mol- CH:(g) -75 186 H:O(g) -242 189 Co(g) -111 198 H:(g) 131 CO:(g) -394 214 (i) Use data from the table to calculate the enthalpy change, AH, for the reaction of steam with methane. Page 10 of 12 (ii) Use data from the table to calculate the entropy change, AS, for the reaction of steam with methane. (b) Use your values of AH and AS from parts (a)(i) and (a)(ii) to calculate the temperature above which this reaction is feasible. (c) The temperature used for this manufacture of hydrogen is usually about 1300 K. Suggest one reason, other than changing the position of equilibrium, why this temperature is used rather than the value that you calculated in part (b).

Chemistry

10th Edition

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

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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