CHM · CHM-2025-C45-085Chemistry
The standard heat of formation, in kcal/mol of Ba²⁺ is: [Given: standard heat of formation of SO4²⁻ ion (aq)= −216 kcal/mol, standard heat of crystallization of BaSO4(s) = −4.5 kcal/mol, standard heat of formation of BaSO4(s) = −349 kcal/mol]