问题
单项选择题
若850℃时化学反应2CaCO3（s）→CaO（s）+CO2（g）的Kθp=0.498，则平衡时CO2的分压为（）kPa。
A.71.5
B.0.498
C.50.5
D.取决于CaCO3的量
答案
参考答案：C
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若850℃时化学反应2CaCO3（s）→CaO（s）+CO2（g）的Kθp=0.498，则平衡时CO2的分压为（）kPa。
A.71.5
B.0.498
C.50.5
D.取决于CaCO3的量
参考答案：C
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