N2(g) + 3 H2(g) equilibrium reaction arrow 2 NH3(g) Calculate ?G for this reacti
ID: 723321 • Letter: N
Question
N2(g) + 3 H2(g) equilibrium reaction arrow 2 NH3(g)Calculate ?G for this reaction under the following conditions (assume an uncertainty of 1 in all quantities, calculate all thermodynamic values from appendix 4 for all parts of the problem).
(a) T = 281 K, PN2 = PH2 = 180 atm, PNH3 = 50. atm
_________ kJ
(b) T = 279 K, PN2 = 199 atm, PH2 = 520 atm, PNH3 = 200. atm
_________ kJ
Explanation / Answer
for this question, we need the value of ?oG. I believe we need more information to solve this problem . please recheck if any data is missing. If you have this value , you can calculate it by using the formula as given below Here N2 + 3 H2 ====> 2 NH3 pN2 = pH2 = 180 atm : p NH3 = 50 atm Now ?G = ?oG + RT ln Q where R = gas constant = 8.314 J/Kmol : T = 281 K Q = [product]/reactant] = (pNH3)^2/(pN2)(pH2)^3 Q = (50)^2/((180)*(180)^3) = 2.38*10^-6 Now ?G = ?oG + RT ln Q
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