The internal energy change e for the conversion of 1 mol of


The internal energy change, E, for the conversion of 1 mol of Compound A to Compound B is +0.2 kJ. Both A and B are solids with densities of are 2.5 and 3.0 g/cm3, respectively.

(a) Calculate the difference between enthalpy and internal energy when the pressure is 1 bar.

(b) Perform the calculation again when the pressure is raised to 100 bar.

(c) Under what circumstances is it reasonable to assume that ?E and ?H are identical?

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Chemistry: The internal energy change e for the conversion of 1 mol of
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