(a) Use the data in Table 1 to calculate the following. (i) The enthalpy change for the reaction, under standard conditions. Comment on your answer. (ii) The standard entropy change for the reaction. Comment on your answer. (iii) The standard Gibbs energy change for the reaction, under standard conditions. Comment on your answer.
(a) Use the data in Table 1 to calculate the following.
(i) The enthalpy change for the reaction, under standard
conditions. Comment on your answer.
(ii) The standard entropy change for the reaction. Comment on
your answer.
(iii) The standard Gibbs energy change for the reaction, under
standard conditions. Comment on your answer.
(iv) The equilibrium constant for the reaction equilibrium, under
standard conditions. Comment on your answer.
1
(v) The change in the heat capacity at constant pressure for the chemical reactions, under standard conditions.
(b) Assuming that the constant pressure heat capacities are independent of temperature, use your answers to part (a) to calculate the equilibrium constant for the reaction at 225, 300 and 450 oC, at standard pressure. Comment on your results.
(c) There are three types of conditions used for methanol manufacture: • high pressure: 250-300 atm; 300-450 oC using ZnO-Cr2O3 catalysts
• medium pressure: 150 atm; 300 oC using ZnO-CuO catalysts
• low pressure: 50 atm; 225 oC using Cu-ZnO-Al2O3 catalysts.
Assume your industrial reactor has a feed of synthesis gas in the stoichiometric ratio 1 CO : 2 H2. Using your answers to (b), give your reasoning as to which of the three types of conditions you would recommend for operations. You must show all your calculations used to justify your decision.
[HINT: Assume the gases obey Raoult's law and that fugacity coefficients can be neglected. You may it useful to use an online cubic equation solver, such ashttps://keisan.casio.com/exec/system/1181809414 (accessed on September 19, 2021).]
Hi The main one I need solved in Question C.
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