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【单选题】
在 1000K 条件下,反应 C(S)+2H 2 (g)=CH 4 ( g )的 Δ r G m Ө =19.228 kJ · mol -1 , 当气相压力为 101325Pa ,组成为 CH 4 10% , H 2 80% , N 2 10% ,上述反应的 Δ r G m Ө 为:A.
Δ r G m Ө >0
B.
Δ r G m Ө <0< /div>
C.
Δ r G m Ө =0
D.
不能确定
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