5. Estimate the standard enthalpy of formation of WC tu
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5. Estimate the standard enthalpy of formation of WC tungsten carbide (TV) based on the following data:
C (g) + O2 = CO2 (g) ΔН298 = -393.32 kJ / mol;
WC (tv) + 5 / 2O2 = WO (tv) + CO2 (g) ΔН298 = -1195.22 kJ / mol;
W (tv) + 3 / 2O2 (g) = WO3 (tv) ΔН298 = -837.24 kJ / mol.
C (g) + O2 = CO2 (g) ΔН298 = -393.32 kJ / mol;
WC (tv) + 5 / 2O2 = WO (tv) + CO2 (g) ΔН298 = -1195.22 kJ / mol;
W (tv) + 3 / 2O2 (g) = WO3 (tv) ΔН298 = -837.24 kJ / mol.
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