Question

A scientist measures the standard enthalpy change for the following reaction to be 160.7 kJ:

CaCO₃(s) ---> CaO(s) + CO₂(g)

Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of CO₂(g) is ___ kJ/mol.

enthalpies: caco3 = -1206.9 , CaO = -635.1, CO2 = -393.5

Answer 1