900°C时氧化铜在密闭的抽空容器中分解,反应为:2CuO(s)= Cu2O(s)+1/2O2(g), 测得平衡时氧气的压力为1.672kPa,则其平衡常数 K 为
A.
0.0165
B.
0.128
C.
0.00825
D.
7.81
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D.
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