I'm in the middle of a thermodynamics lab where I have to measure and compare the expiramental/theoretical change in temperature for the reaction between sodium carbonate and citric acid. I've been looking for a while now and I can't find the heat of formation of sodium citrate. (For my theoretical value) I've found it for both sodium carbonate and citric acid, but I've looked everywhere and yet I can't find it for sodium citrate.
So does anyone know the heat of formation of sodium citrate?