Question

29. A process has a AHⓇ of 8.5 kJ/mol and a AS of 35.2 J/mol-K. What is AG at 300 K for this process? A) -23.0 kJ/mol B) -2.06 kJ/mol C) +33.4 kJ/mol D) +1.24 kJ/mol Sn (aq) 30. A spontaneous voltaic cell is based on the following two standard half-reactions: ca" () + 2e Cd () Eº rod (Cd?/Cd) = -0.40 V + 2e → Sn (1) E® red (Sn 2/Sn) = -0.14 V What is the standard cell potential, Ecoll? A) -0.26 V B) +0.54 V C) -0.54 V D) +0.26 V 31. Do you expect the viscosity of glycerol, (a) C3H5(OH)3, to be larger or smaller than that of (b) 1-propanol, C;H-OH, and why? (a) Glycerol (b) 1-Propanol A) Smaller, due to London dispersion forces between the glycerol molecules B) Larger, due to the hydrogen bonding involving the three OH groups of glycerol C) No difference in viscosity between the two molecules D) Larger, due to ion-dipole interactions 32. A solvent has a pure vapor pressure of 160.0 torr at room temperature. 0.50 mol of a nonvolatile solute is added to 5.50 mol of the solvent to form a solution. The vapor pressure of the liquid above this solution is A) 174.7 torr B) 13.4 torr C) 160 torr D) 146.7 torr 33. The following scheme depicts what type of chemical reaction?