Substance H2O (1) HF (8) AS° (J/mol x K) 70.0 173.8 291.5 AH° (kJ/mol) -285.8 -273.3...
Additional Thermodynamic Data AH AG: Substance (25°C kJ/mol) (25°C kJ/mol (25°C J/mol-K) CH3NO(1) -112.6 -14.6 171.8 CH3NO, (g) -74.3 -6.8 275.0 SO2 (s) -454.5 -374.2 70.7 soz (1) -441.0 -373.8 Soz (g) -395.7 256.8 113.8 Compute Pvap for nitromethane at 15°C and 70°C. Pvap at 15°C = 0.5368 Pvap at 75°C = 9.22
AG°= AH-TAS AG=AGº+RTinQ where R=8.314 J/mol K 1. Calculate AGº for the following reaction at 25 °C if AH°= -1854 kJ/mol; AS°= -236 J/mol K CH-COCH3(g) + 402(g) → 3C02(g) + 3H2O(1) 2. NH.NO, dissolving in water is a spontaneous process. As it dissolves, the temperature of the solution decreases. Based on this, what must the signs (positive or negative) of AG, AH, and AS be?
AH = -116.4 kJ/mol 4. Consider the following reaction: NH4NO3 (s) N20 (g) + 2 H2O (g) Calculate AGº for the reaction. Substance Sº (J/mol K) NH4NO3 (s) 151 N20 (g) 220 H2O (g) 183
Thermodynamic Data at 25 C Substance CH4 (B) (kJmol AHof 74.6 -110.5 AGof 50.5 -137.2 S (Jmol 'K) 186.3 CO (B Cl2 (g) Cu (s) 197.7 223.1 33.2 42.6 Cuo (s) 157.3 -129.7 202.8 -92.3 -273.3 285.8 241.8 -173.23 -20.6 -95.3 -275.4 -237.1 -228.6 -79.9 33.4 186.9 173.8 70.0 188.8 155.6 205.8 HF H20 (9) HNO3 (1) 91.3 33.2 81.6 45.9 87.6 51.3 103.7 -16.4 191.6 210.8 240.1 220.0 192.8 NO2 (8) NH3 02 205.2 42.6 140.9 AgNO3 (s) 124.4...
AH = -116.4 kJ/mol 4. Consider the following reaction: NH4NO3 (8) N20 (g) + 2 H20 (g) Calculate AGº for the reaction. Substance Sº (J/mol K) NH4NO3 (s) 151 N20 (8) 220 H2O (9) 183
TABLE 7.2 Some Standard Molar Enthalpies of Fa AcHº at 298.15 K Substance kJ/mola Substance CO(g) CO2(g) CH4(g) C2H2(g) C2H4(g) C2H6(g) C3H8(g) C4H10(g) CH3OH(1) C2H5OH(1) HF(g) HCl(g) -110.5 -393.5 - 74.81 226.7 52.26 -84.68 - 103.8 – 125.6 –238.7 –277.7 -271.1 -92.31 HBr(g) HI(g) H2O(g) H2O(1) H2S(g) NH3(g) NO(g) N2O(g) NO2(g) N204(8) SO2(g) SO3(g) aValues are for reactions in which one mole of substance is formed. M been rounded off to four significant figures. (Reference to Equation 7.22): A Hº...
What is AH°rxn for the following reaction? H3AsO4(aq) + 4H2(g) → AsH3(g) + 4H2O(1) Substance AH°f(kJ/mol) 171.5 AsH3(8) H3ASO4(aq) H2O(1) -904.6 -285.8 O -790.3 kJ/mol O-1018.9 kJ/mol 0 -410.1 kJ/mol O -67.1 kJ/mol 0 -1876.3 kJ/mol
298.15K AH HO (1) -285.8 H2O(g) -241.8 4,6° Ch -237.1 -228.6 Sº Go Go 70.0 75.3 188.8 33.6 a) (1 pt) Calculate Acondensation Gº in J) for the condensation of water vapor at 25°C and 1 bar pressure. b) (1 pt) Is this process spontaneous under these conditions? c) (2 pts) Calculate Kp at 25°C. d) (15 pts) Use the Gibbs-Helmholtz equation AG d ) = -AH°(T) T 12 to calculate Acondensation Gº (in J) for the condensation of water...
At 298 K, evaluate deltaG(kJ) and deltaE (V) for
2CH3OH(l) + 3O2(g) -> 4H2O(g) + 2CO2(g)
S (J/mol-K) AH°y (kJ/mol) So (J/mol-K) AH(kJ/mol) Substance Substance N2(g) CH-ОН() 126.8 0 191.5 -238.6 CO(g) NH3(g) 197.9 192.5 -110.5 -46.2 CO2(g) NO(g) 213.6 +90.4 210.6 -393.5 NO2(g) +33.8 240.5 H2(g) HNO3(aq) 130.6 146.0 -206.6 H2O( 69.9 -285.8 O2(g) 188.8 H2O(g) 0 205.0 -241.8
*** ** -305.01 -183.9 151.1 NH4NO3 (aq) -339.9 -190.6 259.8 AHºf (kJ/mol) AG°f (kJ/mol) Sº (/mol K) 0 205.1 Oxygen 02 (g) O(g) 03 (g) 249.2 231.7 161.1 142.7 163.2 238.9 Phosphorus AH° (kJ/mol) AG°f(kJ/mol) sº (/mol K) Nitrogen AH°(kJ/mol) AG°f(kJ/mol) s° /mol K) N2 (8) 0 191.6 N (g) 472.7 455.6 153.3 NH3 (g) -46.1 -16.5 192.5 NH3 (aq) -80.0 -27.0 111.0 132.0 -79.0 113.0 90.3 86.6 210.8 51.7 66.1 261.8 NH4+ (aq) NO (g) NOCI (9) NO2 (g)...