Consider the reaction 2N205(g) =4NO2(g) + O2(g) at 25°C for which the following data are relevant: S° N205 NO2 11.289 kJ/mol 355.32 J/K mol 33.150 kJ/mol 239.90 J/K mol 02 0 kJ/mol 204.80 J/K mol The reaction is allowed to proceed until all substances involved have reache equilibrium concentrations. Under those conditions, what is AG for the read -1.35 x 105 kJ 98.7 kJ -25.2 kJ 135 kJ

Calculate the standard free energy change (kJ/mol) for the reaction shown at a temperature of 298.15 K using the information provided. Reaction AHrxn (kJ/mol) ASxn (J/mol-K) 4 Na(s) + O2(g) → 2 Na20(s) -828.4 -260.2

Consider the reaction: NH3 (g) + HCI (g) → NH4Cl (s) Given the following table of thermodynamic data at 298 K: Substance AH° (kJ/mol) S° (J/K-mol) NH3 (g) -46.19 192.5 HCI (g) -92.30 186.69 NH4Cl (s) -314.4 94.6 The value of K for the reaction at 25 °C is 1.1-10-16 9.3 - 1015 1.4.108 150 8.4. 104 Submit Request Answer

Consider the reaction 2NO 2( g) --> N 2O 4( g); Δ H° = –56.8 kJ and Δ S° = –175 J/K. In a container (at 298 K) N 2O 4( g) and NO 2( g) are mixed with initial partial pressures of 2.4 atm and 0.42 atm, respectively. Which of the following statements is correct?   a. Some N2O4(g) will decompose into NO2(g).   b. Some NO2(g) will dimerize to form N2O4(g).   c. The system is at equilibrium at these initial pressures.   d. The final total pressure must be known to answer this question.   e. None of these.