Answer Happy

Calculate AG for the formation of one mole of N₂O4 from its elements using AH and AS, for N₂O4- Use data in the table below: Substance Ag() AgCl(s) Al() Al₂O3(s) C() (graphite) CO(g) CO₂(g) CH₂(g) Standard Entropies of Some Typical Substances at 298.15 K Sº U mol-¹ K-¹) 40 76.1 C₂H₂(g) C₂H.(g) C₂H(g) C₂H₁() C₂H₂OH() Ca(s) CaCO3(s) CaCl₂() U mol-¹ K-¹) 42.55 96.2 28.3 51.0 5.69 186.2 CH,CI(g) 234.2 CH,OH() 126.8 CO(NH,),() 104.6 CO(NH,),(aq) 173.8 200.8 219.8 229.5 197.9 213.6 466.9 161 41.4 92.9 114 Substance CaO) Ca(OH)₂() CaSO4(0) 107 CaSO4 H₂O() 131 CaSO4-2H₂O() 194.0 223.0 27 90.0 130.6 188.7 Ch₂(g) Fe(s) Fe₂O3(1) H₂(g) H₂O(g) H₂O(1) HCI(g) HNO,(0) H₂SO4(1) HCH,O,(0) Hg(1) Hg(g) KG) KCI() K₂SO40) 69.96 186.7 155.6 157 160 76.1 175 64.18 82.59 176 Substance N₂(g) NH,(g) NH,CH() Sº (mol-¹K-¹) 191.5 192.5 94.6 210.6 240.5 220.0 304 NO(g) NO₂(g) N₂O(g) N₂O4(g) Na() Na₂CO3(s) 136 NaHCO,() 102 NaCl(s) NaOH() Na₂SO4(s) 0₂(8) PLO() S() SO₂(g) SO,(g) 51.0 72.38 64.18 149.4 205.0 67.8 31.9 248.5 256.2
Substance Ag(s) AgBr(s) AgCl(s) Al(s) Al₂O₂() C(s) (graphite) CO(g) CO₂(g) CH4(g) CH,CI(g) CH₂(g) CH₂OH() CO(NH,),() (urea) CO(NH,),(aq) C₂H₂(g) C₂H₂(g) C₂He(g) C₂H₂OH() Standard Enthalpies of Formation of Typical Substances AH; (kJ mol-¹) Substance 0 H₂O₂(1) HBr(g) Ca(s) CaBr₂(1) CaCO3(s) CaCl₂() COG) Ca(OH)₂G) CaSO4() CaSO, H₂O() CaSO4-2H₂O() Ch₂(g) Fe(s) Fe₂O₂(1) H₂(g) H₂O(g) H₂O(1) -100.4 -127.0 0 -1669.8 0 -110.5 -393.5 -74.848 -82.0 14.2 -238.6 -333.19 -391.2 226.75 52.284 -84.667 -277.63 0 -682.8 <-1207 -795.0 -635.5 -986.59 -1432.7 -1575.2 -2021.1 0 0 -822.2 0 -241.8 -285.9 HCI(g) HI(g) HNO,(1) H₂SO4(!) HC,H,O,(0) Hg(0) Hg(g) 1₂(0) KG) KCI() K₂SO4G) N₂(g) NH3(g) NH,C) NO(g) NO₂(g) N₂O(g) N₂O₂(g) N₂O₂(g) Na(s) NaHCO,() Na₂CO3(1) NaCl() NaOH() Na₂SO,G) 0₂(g) Pb(s) PLO() SG) SO₂(g) SO₂(g) AH; (kJ mol-¹) -187.6 -36 -92.30 26.6 -173.2 -811.32 -487.0 0 60.84 -435.89 -1433.7 0 00 -46.19 -315.4 90.37 33.8 81.57 9.67 11 0 -947.7 -1131 -411.0 -426,8 -1384.5 00 -219.2 0 -296.9 -395.2