The equilibrium constant of the reaction N2 (g) + 3H2(g) --> 2 NH3 (g) at 39 oC is Keq = 593,266. (b) What is the standard reaction Gibbs energy of this reaction? 3 sig. fig. Answer in exp. format, e.g. 5.14E3, -4.32E-4, ...
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The equilibrium constant of the reaction N2 (g) + 3H2(g) --> 2 NH3 (g) at 39 oC is Keq = 593,266.
(b) What is the standard reaction Gibbs energy of this reaction?
3 sig. fig. Answer in exp. format, e.g. 5.14E3, -4.32E-4, ...
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- A reaction mixture (mixture 1) at 298 K has a N2O4(g) partial pressure of 0.1 bar anda NO2(g) partial pressure of 0.05 bar. Calculate the reaction Gibbs energy (∆??) formixture 1 at 298 K. A second reaction mixture (mixture 2) is prepared at 298 K with a N2O4(g) partialpressure of 0.05 bar and a NO2(g) partial pressure of 0.10 bar. (i) Calculate the reaction Gibbs energy (∆??) for mixture 2 at 298 K. (ii) Comment on the spontaneity of the forward reaction for mixture 1 and mixture 2.Support your answer with the values of ∆?? calculated for the two mixtures. please give solution and answerThe equilibrium pressure of hydrogen H2 over solid uranium U and solid uranium hydride UH3 at 500 K is 139 Pa. Calculate the standard Gibbs energy of formation of UH3 (s) in the reaction: U(s) + 3/2 H2 (g) → UH3 (s) at 500 K. Hint: start with writing the equilibrium constant K expressed through activities that include pressure of gas. Examples are in class notes. Then, convert K to the standard Gibbs energy of the pertinent reaction.The standard reaction enthalpy of Zn(s) + H2O(g) → ZnO(s) + H2(g) is approximately constant at +224 kJ mol-1 from 920 K up to 1280 K. The standard reaction Gibbs energy is +33 kJ mol-1 at 1280 K. Assuming that both quantities remain constant, estimate the temperature at which the equilibrium constant becomes greater than 1.
- The solubility of mercury(I) iodide is 5.5 fmol dm-3 (1 fmol = 10-15 mol) in water at 25 °C. What is the standard Gibbs energy of dissolution of the salt?A reaction mixture (mixture 1) at 298 K has a N2O4(g) partial pressure of 0.1 bar anda NO2(g) partial pressure of 0.05 bar. Calculate the reaction Gibbs energy (∆??) formixture 1 at 298 K. please give solution and answerA reaction mixture (mixture 1) at 298 K has a N2O4(g) partial pressure of 0.1 bar anda NO2(g) partial pressure of 0.05 bar. Calculate the reaction Gibbs energy (∆??) formixture 1 at 298 K. please give answer and solution
- Calculate the masses of (i) Ca(NO3)2 and, separately, (ii) NaCl to add to a 0.150 mol kg−1 solution of KNO3(aq) containing 500 g of solvent to raise its ionic strength to 0.250.Calculate the masses of (a) Ca(NO3)2 and, separately, (b) NaCI to add to a 0.150 mol kg-1 solution of KNO3(aq) containing 500 g of solvent to raise its ionic strength to 0.250.The dissociation vapour pressure (the pressure of gaseous products in equilibrium with the solid reactant) of NH4CI at 427 °C is 608 kPa but at 459 °C it has risen to 1115 kPa. Calculate (a) the equilibrium constant. (b) the standard reaction Gibbs energy, (c) the standard enthalpy, (d) the standardentropy of dissociation, all at 427 °C. Assume that the vapour behaves as a perfect gas and that ΔHΘ and ΔSΘ are independent of temperature in the range given.
- 7.5(a) The standard reaction enthalpy of Zn(s) + H2O(g) → ZnO(s) + H2(g) is approximately constant at +224 kJ mol−1 from 920 K up to 1280 K. The standard reaction Gibbs energy is +33 kJ mol−1 at 1280 K. Estimate the temperature at which the equilibrium constant becomes greater than 1.One of the most extensively studied reactions of industrial chemistry is the synthesis of ammonia, for its successful operation helps to govern the efficiency of the entire economy. The standard Gibbs energy of formation of NH3(g) is -16.5 kJ mol-1, at 298 K. What is the reaction Gibbs energywhen the partial pressure of the N2, H2, and NH3 (treated as perfect gases) are 3.0 bar, 1.0 bar, and 4.0 bar, respectively?What is the spontaneous direction of the reaction in this case?Borneol is a pungent compound obtained from the campharwood tree of Borneo and Sumatra. The standard reaction Gibbs energy of the isomerization of borneol to isobarneal in the gas phase at 503 K is +9.4 kJ mol-1. Calculate the reaction Gibbs energy in a mixture consisting of 0.15 mol of borneol and 0.30 mol of isoborneol when the total pressure is 600 Torr.