ΔSosys = 179.1 J/K
ΔHosys = -221.1 KJ = -221100 J
T = 25 oC= (25 + 273) K =298 K
ΔSosurr = -ΔHosys/T
= 221100 J / 298 K
= 741.95 J/K
So,
ΔSo univ = ΔSo sys + ΔSo surr
= 179.1 J/K + 741.95 J/K
= 921.1 J/K
Answer: 921.1 J/K
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