The standard entropy of Pb(s) at 298.15 K is 64.80 J K –1 mol –1 . Assume that the heat capacity… 1 answer below »

The standard entropy of Pb(s) at 298.15 K is 64.80 J K–1 mol–1. Assume that the heat capacity of Pb(s) is given by

The melting point is 327.4°C and the heat of fusion under these conditions is 4770. J mol–1. Assume that the heat capacity of Pb(l) is given by

a. Calculate the standard entropy of Pb(l) at 725°C.

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b. Calculate ∆H for the transformation Pb(s, 25.0°C) Pb(l, 725°C).

 

 

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