Tungsten Bromide (WBr5) Br5W1(l) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 298.15 182.004 293.341 293.341 0. -298.059 -262.330 45.959 300 182.004 294.467 293.344 0.337 -298.117 -262.108 45.637 400 182.004 346.826 300.483 18.537 -368.580 -235.260 30.722 500 182.004 387.439 313.964 36.738 -362.123 -202.680 21.174 600 182.004 420.622 329.059 54.938 -355.779 -171.389 14.921 700 182.004 448.678 344.195 73.138 -349.526 -141.153 10.533 800 182.004 472.982 358.808 91.339 -343.351 -111.808 7.300 900 182.004 494.419 372.708 109.539 -337.250 -83.232 4.831 1000 182.004 513.595 385.855 127.740 -331.218 -55.332 2.890