Use the curve-fit coefficients for the standardized enthalpy from Table H.2 to verify the enthalpies of formation at 298.15 K in Table H.1 for methane, propane, and hexane.

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Formula CHA C₂H₂ C₂H₁ C₂H6 C3H6 C3H8 C₂H C₂H₂0 C₂H10 C5H12 C₂H6 CH12 C₂H14 C₂H₂4 C₂H16 Cg H16 Cg H18 C₂H18 C₂H20 C₁0H₂0 C₁0H22 C₁1H₂2 C₁1H₂4 C12H24 C12H26 Fuel Methane Acetylene Ethene Ethane Propene Propane 1-Butene n-Butane 1-Pentene n-Pentane Benzene 1-Hexene n-Hexane 1-Heptene n-Heptane 1-Octene n-Octane 1-Nonene n-Nonane 1-Decene n-Decane 1-Undecene n-Undecane 1-Dodecene n-Dodecane Molecular weight (kg/kmol) 16.043 26.038 28.054 30.069 42.080 44.096 56.107 58.123 70.134 72.150 78.113 84.161 86.177 98.188 100.203 112.214 114.230 126.241 128.257 140.268 142.284 154.295 156.311 168.322 170.337 h₂ (kJ/kmol) -74,831 226,748 52,283 -84,667 20,414 -103,847 1172 -124,733 -20,920 -146,440 82,927 -41,673 -167,193 -62,132 -187,820 -82,927 -208,447 -103,512 -229,032 -124,139 -249,659 -144,766 -270,286 -165,352 -292,162 Aği (kJ/kmol) -50,794 209,200 68,124 -32,886 62,718 -23,489 72,036 -15,707 78,605 -8201 129,658 87,027 209 95,563 8745 104,140 17,322 112,717 25,857 121,294 34,434 129,830 43,012 138,407 - Šº (kJ/kmol-K) 186.188 200.819 219.827 229.492 266.939 269.910 307.440 310.034 347.607 348.402 269.199 385.974 386.811 424.383 425.262 462.792 463.671 501.243 502.080 539.652 540.531 578.061 578.940 616.471 - HHV* (kJ/kg) 55,528 49,923 50,313 51,901 48,936 50,368 48,471 49,546 48,152 49,032 42,277 47,955 48,696 47,817 48,456 47,712 48,275 47,631 48,134 47,565 48,020 47,512 47,926 47,468 47,841 LHV* (kJ/kg) 50,016 48,225 47,161 47,489 45,784 46,357 45,319 45,742 45,000 45,355 40,579 44,803 45,105 44,665 44,926 44,560 44,791 44,478 44,686 44,413 44,602 44,360 44,532 44,316 44,467 Boiling pt. (°C) -164 -84 -103.7 -88.6 -47.4 -42.1 -63 -0.5 30 36.1 80.1 63.4 69 93.6 98.4 121.3 125.7 - 150.8 170.6 174.1 - 195.9 213.4 216.3 MAR (kJ/kg) 509 - - 488 437 425 391 386 358 358 393 335 335 316 300 - 295 277 265 256 T (K) 2226 2539 2369 2259 2334 2267 2322 2270 2314 2272 2342 2308 2273 2305 2274 2302 2275 2300 2276 2298 2277 2296 2277 2295 2277 P (kg/m³) 300 370 514 500 595 579 641 626 879 673 659 - 684 - 703 - 718 730 740 749