皮皮学，免费搜题
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【单选题】
反应N2(g)+3H2(g)→2NH3(g)已达平衡，在保持温度、压力不变的条件下，往系统中加入惰性气体后，则
A.
n(N2)减小、n(H2)减少、n(NH3)增大、Kθ不变
B.
n(N2)减小、n(H2)减少、n(NH3)增大、Kθ增大
C.
n(N2)、n(H2)、n(NH3)不变，Kθ不变
D.
n(N2)增大、n(H2)增大、n(NH3)减小、Kθ不变
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