Chemistry

Chemistry

Problem

At 298 K298\,\text{K}, a reaction has ΔH∘=−125 kJ mol−1\Delta H^\circ = -125\,\text{kJ mol}^{-1} and ΔS∘=−250 J mol−1 K−1\Delta S^\circ = -250\,\text{J mol}^{-1}\,\text{K}^{-1}. Using R=8.314 J mol−1 K−1R = 8.314\,\text{J mol}^{-1}\,\text{K}^{-1}, what is the value of the equilibrium constant KK at 298 K298\,\text{K}? a) ≈6×10−9\approx 6\times10^{-9} b) ≈7×108\approx 7\times10^{8} c) ≈2.5×1020\approx 2.5\times10^{20} d) ≈9×1034\approx 9\times10^{34}

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