單項(xiàng)選擇題

若反應(yīng)氣體都是理想氣體,反應(yīng)平衡常數(shù)之間有Ka=Kp=Kx的反應(yīng)是:()
(1)2HI(g)=H2(g)+I2(g);
(2)N2O4(g)=2NO2(g);
(3)CO(g)+H2O(g)=CO2(g)+H2(g);
(4)C(s)+CO2(g)=2CO(g)

A.(1)(2)
B.(1)(3)
C.(3)(4)
D.(2)(4)

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