What is the increase in entropy when 11.2 L of O2 is mixed with 11.2 L of H2 at STP?


a) 0.576 J/K
b) 5.76 J/K
c) 7.56 J/K
d) 2.76 J/K

Entropy = 2.303 n R log V2V1               = 2.303 × 1 × 8.314 × log 22.411.2  (n = 0.5 mole O2 + 0.5 mole H2)               = 2.303 × 1 × 8.314 × log 12             = - 5.76 J/KThus option b is correct

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