46. Solution to Chemistry Problem

63. For a homogeneous gas chemical reaction (see Table 1), perform the following thermodynamic calculations:
a) calculate the heat of reaction at standard temperature at constant pressure ΔH0298 and constant volume ΔU0298
b) calculate the heat of reaction at temperatures T1, T2, T3 using the temperature dependences of heat capacities.

Table 1

No. Reaction equations T1, K T2, K T3, K Heat capacity, atm
63 CH3CHO H2O ↔ HOCH2CH2OH 500 600 700 10

c) determine the temperature coefficient of the heat of reaction ΔCp at temperature T2 using an analytical method.

d) determine the change in standard entropy ΔS0298 and standard chemical affinity ΔG0298 of this chemical reaction, analyze the results;
d) calculate the thermodynamic equilibrium constant of the reaction KT0 using the Temkin-Schwartzman method at temperatures T1, T2, T3.
e) explain the effect of the total pressure in the system and partial pressures on the standard equilibrium constant KT0, the equilibrium constant KN and the equilibrium degree of conversion.