he Ostwald process for the commercial production of nitric acid involves three steps. 4 NH3(g) + 5 02(9) 4 NO(g) + 6 H20(g) 2 NO(g) + O2(g) → 2 NO2(9) 3 NO2(9) + H2O(1) → 2 HNO3(1) + NO(g) (a) Calculate AH°, ASº, AG°, and K (at 298 K) for each of the three steps in the Ostwald process (see Appendix 4). (Use the values you calculate for AH° and AS° to calculate AG first step second step third step ΔΗο -908 V kJ AH• -112 v k) AH° -74 V kJ AS° 181 V J/K As -147 V J/K -267 V J/K AG° -928 v kJ AG° -70 v kJ AG 4.672 x kJ K 4.16e168 K 8.99e11 K 0.15 (b) Calculate the equilibrium constant for the first step at 825°C, assuming AH® and AS° do not depend on temperature. 41.45
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Hello! I was hoping you could explain step 3 of part A and part B of this question. I am struggling to understand how my delta G value is wrong and I think it is therefore messing up my K value... Thanks in advance!
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