Phosphorus Nitride (P3N5) N5P3(cr) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 298.15 148.950 184.096 184.096 0. -320.155 -195.482 34.248 300 149.787 185.020 184.099 0.276 -320.146 -194.708 33.902 400 192.464 234.376 190.538 17.535 -319.936 -152.610 19.929 500 217.568 280.175 203.962 38.107 -314.612 -111.344 11.632 600 234.304 321.385 220.160 60.735 -307.339 -71.348 6.211 700 246.856 358.500 237.317 84.828 -298.751 -32.680 2.439 800 255.224 392.032 254.596 109.949 -289.301 4.694 -0.306 900 261.500 422.480 271.584 135.807 -279.283 40.846 -2.371 1000 265.266 450.236 288.083 162.153 -268.934 75.864 -3.963 1100 267.888 475.646 303.995 188.816 -258.412 109.835 -5.216 1200 269.868 499.045 319.287 215.709 -438.505 146.079 -6.359 1300 271.207 520.703 333.958 242.768 -425.504 194.267 -7.806 1400 271.904 540.831 348.025 269.929 -412.515 241.454 -9.009 1500 271.960 559.596 361.511 297.128 -399.588 287.715 -10.019