The standard entropy of lead at 25C is Sdegree_298 = 64.80 J/K mol. The heat capacity of solid lead is: C_P(s)[J/K mol] = 22.13 + 0.01172T + 0.96 Times 10^5 T^-2. The melting point is 327.4 C and the heat of fusion is 4770J/ mol. The heat capacity of liquid lead is C_P(l)[J/K mol] = 32.51 – 0.00301T. Calculate the standard entropy of liquid lead at 500 C. Calculate the Delta H for changing solid lead at 25C to liquid lead at 500C.

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