Standard Enthalpy Of Formation Of Mgcl2. As the standard enthalpy change of a reaction is sum of heat of formation of products minus sum of heat of formation of reactants, then the heat of formation. Remember this is for reaction at standard conditions 25°c and 1 atm.
Now what we do is calculate it all together. Sparingly soluble ammonia liquid : Selected atct [1, 2] enthalpy of formation based on version 1.118 of the thermochemical network this version of atct results was partially described in ruscic et al.