Pb + S
Reaction Pb + S ¨ PbS
Phase transition


ReagentPb powder (5N 200mesh)

S powder (6N)
CompanyRare Metallic Co. Ltd.
Weight74.6mg
ContainerSiO2 glass
Comment@
Figure shows only the first heating process. Sulfidation reaction starts at 165Ž, finishes at 410Ž. Exothermic peak at 251Ž,
ĢHr=297.5J/g.
The enthalpy of formation
@Product is the cubic PbS.
The enthalpy of formation, ĢHf=17Kcal/mol.
DSChome