The molar volume of a certain solid is 142.0 cm3 mol−1 at 1.00 atm and 427.15 k, its melting temperature. the molar volume of the liquid at this temperature and pressure is 152.6 cm3 mol−1. at 1.2 mpa the melting temperature changes to 429.26 k. calculate the enthalpy and entropy of fusion of the solid

Explanation:

Hello,

Clausius Clapeyron equation is suitable in this case, since it allows us to relate the P,T,V behavior along the described melting process and the associated energy change. Such equation is:

As both the enthalpy and volume do not change with neither the temperature nor the pressure for melting processes, its integration turns out:

Solving for the enthalpy of fusion we obtain:

Finally the entropy of fusion is given by:

Best regards.

what are the statements

there are two significant figures.