Tetramethylsilane (Si(CH3)4) C4H12Si1(g) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 298.15 138.574 361.189 361.189 0. -286.604 -148.063 25.940 300 139.076 362.047 361.191 0.257 -286.768 -147.202 25.630 400 167.695 406.038 366.996 15.617 -295.056 -99.399 12.980 500 193.761 446.324 378.886 33.719 -302.074 -49.646 5.186 600 216.271 483.685 393.276 54.245 -307.811 1.399 -0.122 700 235.852 518.525 408.708 76.871 -312.352 53.310 -3.978 800 253.006 551.160 424.497 101.331 -315.801 105.794 -6.908 900 268.153 581.853 440.292 127.405 -318.275 158.652 -9.208 1000 281.416 610.807 455.910 154.897 -319.909 211.739 -11.060 1100 293.047 638.185 471.247 183.632 -320.839 264.954 -12.582 1200 303.256 664.131 486.249 213.457 -321.187 318.227 -13.852 1300 312.210 688.765 500.888 244.241 -321.064 371.510 -14.927 1400 319.992 712.196 515.152 275.862 -320.568 424.768 -15.848 1500 326.352 734.499 529.037 308.192 -319.809 477.981 -16.645