25. Solving a chemistry problem

25. Solving a chemistry problem

2.9. The standard (at 298.15 K) entropy value of solid lead is 64.9 J / (mol * K), Calculate the entropy of liquid lead at 773 K. The melting point of lead is 600 K, the heat of fusion is 4.81 kJ / mol. The heat capacity (J / (mol * K) of solid lead is described by the equation Cp (T) = 23.93 8.70 * 10-3 * T, liquid Cp (T) = 32.43-3.10 * 10-3 * T ; the pressure is 101.3 kPa.

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