Question

A scientist measures the standard enthalpy change for the following reaction to be 165.2 kJ:
CaCO3(s)CaO(s) + CO2(g)

Answer 1

Answer:

scientist measures the standard enthalpy change for the following reaction to be 165.3 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.