SOLVED

11) Place the following in order of decreasing standard molar entropy. KCl(s)Na3PO4(aq)KCl(aq) A) KCl(s) > KCl(aq) > Na3PO4(aq) B) KCl(aq) > KCl(s) > Na3PO4(aq) C) Na3PO4(aq) > KCl(aq) > KCl(s) D) KCl(s) > Na3PO4(aq) > KCl(aq) E) KCl(aq) > Na3PO4(aq) > KCl(s) 12) Which one of the following has the highest standard molar entropy, S°, at 25°C? A) I2(g) B) F2(g) C) Br2(l) D) H2(g) E) Cl2(g) 13) Identify the compound that is not an allotrope of carbon. A) diamond B) dry ice C) graphite D) charcoal E) buckyball 14) Which one of the following would be expected to have the lowest standard molar entropy, S°, at 25°C? A) C H4(g) B) C3H6(g) C) C3H8(g) D) C4OH(g) 15) Identify the compound with the lowest standard free energy of formation. A) NaCl(s) B) O2(g) C) NO(g) D) O3(g) E) It is hard to determine. 16) Identify the compound with the highest standard free energy of formation. A) NaCl(s) B) H2(g) C) NO(g) D) O3(g) E) It is hard to determine. 17) Identify the compound with the standard free energy of formation equal to zero. A) KCl(s) B) H2(g) C) NO(g) D) O3(g) E) It is hard to determine. 18) Given the following equation, H2O(g) + CO(g) → H2(g) + CO2(g) ΔG°rxn = -28.6 kJ Calculate ΔG°rxn for the following reaction. 5 H2O(g) + 5 CO(g) → 5 H2(g) + 5 CO2(g)   A) -143.0 kJ B) +143.0 kJ C) -5.72 kJ D) +5.72 kJ E) -28.6 kJ 19) Given the following equation, H2O(g) + CO(g) → H2(g) + CO2(g)ΔG°rxn = -28.6 kJ Calculate ΔG°rxn for the following reaction. 8 H2(g) + 8 CO2(g) → 8 H2O(g) + 8 CO(g)   A) -228.8 kJ B) +228.8 kJ C) -3.57 kJ D) +3.57 kJ E) -28.6 kJ 20) Given the following equation, C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g)ΔG°rxn = -2074 kJ Calculate ΔG°rxn for the following reaction. 3 C3H8(g) + 15 O2(g) → 9 CO2(g) + 12 H2O(g) A) -2074 kJ B) +6222 kJ C) -6222 kJ D) +2074 kJ E) -691 kJ