Problem 1 At 248 °C and a total pressure of 1.00 atm the degree of dissociation of SbCls(g) is a=0.718 for the reaction SbCls(g) SbCls(g) + Cl₂(9) The degree of dissociation a is defined as number of moles of SbCl, dissociated at equilibrium original number of moles of SbCl, (a) What is the value of the equilibrium constant K(T) at 248 °C and 1.00 atm? (b) What is the value of K, at the same temperature when the pressure is 5.00 atm? Assume that under these conditions the system at equilibrium behaves as an ideal gas mixture. (c) What is the value of the degree of dissociation a in the conditions of part (b)? Problem 2 Which one of the following statements is/are incorrect for the reaction 2 NaHCO3(s) Na2CO3(s) + H₂O(g) + CO₂(g) at low pressure? Please notice that your answer will not count unless you explain and justify your choice(s). (a) (b) K(T) = (Praco,/P°) (Pio/P) (Poo,/P) (Paco,/P / K₁ = 2,0 *co, (P/P) (c) If initially there was only NaHCO3(s) present, then P A.G = -2RT In 2p (d) 1 A.G Po + Poo, where is the standard chemical potential of species A. (e) A,G = 0 in the system at the instant when only NaHCO₂(s) is present in the reaction vessel. (d) A.G® - Pio + Poo where is the standard chemical potential of species A. (e) A.G = 0 in the system at the instant when only NaHCO₂(s) is present in the reaction vessel. Problem 3 The normal boiling point of diethyl ether is 34.5°C, and its molar enthalpy of vapor- ization (that may be assumed independent of temperature for this problem) is 26.7kJ mol-1. What is the vapor pressure of diethyl ether at 25°C? Please recall that at the normal boiling point the vapor pressure of the liquid is 760 mmHg. Problem 4 The molar solubility s of Ag2CrO, in water at 25°C following from the dissolution equilibrium Ag₂Cro(s) 2Ag(aq) + Cro¯(ag) is s 8.74 x 10-5 mol L-. What is the value of the solubility product equilibrium constant K.,(Ag₂Cro₂) in water at 25°C? Assume that the Debye-Hückel limiting law for the activity coefficients applies in this situation. Problem 5 Calculate the electromotive force of the cell Pt(s) H2(g. 1.0 bar) | HI(aq, 0.0070 mol L-)| Agl(s) | Ag(s) at 25°C. Assume that in the conditions of the solution, the Debye-Hückel limiting law is applicable. (Agl(s)/Ag(s)) -0.15224 V. R=8.314J K-mol=8.206 x 10-2 atm K¹ mol-1 -8.314× 10-bar K-¹ mol- 2