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平衡常數的計算

Sep 1st 2014, 07:36

於549 K時，下列反應之平衡常數為何？

CH2O(g) + 2 H2(g) → CH4(g) + H2O(g) ∆H° = -94.9 kJ; ∆S°= -224.2 J/K

(A) 481
(B) 1.07 x 109 (10的9次方)
(C) 2.08 x 10-3 (10的-3次方)
(D) 9.35 x 10-10( 10的-10次方)
(E) 1.94 x 10-12(10的-12次方)

正確答案為 (A)

能否請各位高手講解為什麼答案是(A)

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