Question

Calculate ΔSsurr and ΔSuniverse for a reaction. Close Problem Consider the reaction H2S(g) + 2H2O(l)3H2(g) + SO2(g) where S° rxn = 294.7 J/K Using standard thermodynamic data (in the Chemistry References), calculate the entropy change of the surroundings and the universe at 25°C.

Ssurroundings = J/K

Suniverse = J/K

Answer 1

we know, A universe - Assystem & Assurrounding reversible process - For As universe =0. As the question reachon is an reversible process, ther, 8 Sunivese = 0. and 15 system - 4Hsys' т 294.75 4 Hsys 298 aps H system = 298% 294.7 - 87820.6 Tele 4H system - 87.8206 KJ then this process is an endothermic process As 4H systeem 2 tve. so, from the system, heat is absorp from the sunroundings, thus surrounding heat released, and as surround co. so, Asuniverse - As systern & 4S surroundry 0² As system as as surrounding AS surrounding ² - 45 system - - 294.7 L