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Comment
Only the heating and cooling one cycle is shown.
Heating processFFormation reaction is started near the melting point of Sulfur. 121 -30.96J/g Ag2S Tr 186 10.11J/g@ secondary sulfidation of residual silver 382 -79.90J/g Ag2S Tr () 611 4.14J/g
Cooling processFTr 597 -4.11J/g Tr 166@-26.53J/g @
The enthalpy of formation
Product is Ag2S. Enthalpy of reaction is H=-110.9J/g, so that the enthalpy of formation of Ag2S is@31kJ/mol
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