For the substance listed below with the corresponding problem number, calculate the standard enthalpy of formation at 298 K (ΔfH0298) using its standard enthalpy of combustion (ΔCH0), and calculate the standard enthalpy of formation at 398 K using the obtained value (ΔfH0298) and the isobaric heat capacities CP (see ΔCH0 in Table 6.3 and CP in Tables 6.3 and 6.4 of Appendix 6). Combustion products CO2 (g), H2O (l). N2 (d).
acetylene C2H2 (g);

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