Pb + S
Reaction
Pb + S ¨ PbS
Phase transition
Reagent
Pb powder (5N 200mesh)
S powder (6N)
Company
Rare Metallic Co. Ltd.
Weight
74.6mg
Container
SiO2 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