Free energy and vapor pressure
October 4th, 2022
Consider the thermal decomposition of CaCO3.
CaCO3(s) <–> CaO(s) + CO2(g)
The equilibrium vapor pressures of CO2 are 22.6 mmHg at 700°C and 1829 mmHg at 950°C. Calculate the standard enthalpy of the reaction.
I am having problems finding how to used the standard free energy formula with vapor pressure. Can you help me?