The most common white pigment until the 1880s was lead white,sometimes called basic lead carbonate: (PbCO₃)₂Pb(OH)₂.Paintings containing lead white turned black in the presence of moist H₂S from natural sources and polluted air due to the formation of PbS.The PbCO₃ portion of this reaction is shown below.
PbCO₃(s)+ H₂S(aq)→ PbS(s)+ H₂CO₃(aq)
If ΔH° = -60.9 kJ/mol and ΔS° = 26.6 J/K,what are ΔS_surr and ΔS_total for this reaction at 25°C?

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The Answer of The most common white pigment until the 1880s was lead white,sometimes called basic lead carbonate: (PbCO₃)₂Pb(OH)₂.Paintings containing lead white turned black in the presence of moist H₂S from natural sources and polluted air due to the formation of PbS.The PbCO₃ portion of this reaction is shown below. PbCO₃(s)+ H₂S(aq)→ PbS(s)+ H₂CO₃(aq) If ΔH° = -60.9 kJ/mol and ΔS° = 26.6 J/K,what are ΔS_surr and ΔS_total for this reaction at 25°C?

The Most Common White Pigment Until the 1880s Was Lead