将0.1mol Cu与40ml10mol/LHNO3充分反应,测得反应后的溶液里含有a molH+由

将0.1mol Cu与40ml10mol/LHNO3充分反应,测得反应后的溶液里含有a molH+

由此可知                                                     

A.生成的气体一定是NO2,在标准状况下的体积4.48 L

B.生成的气体一定是NO,在标准状况下的体积约1.49L

C.被还原的硝酸的物质的量为(0.2-a)mol

D.反应后的溶液里含有0.2mol NO3

 

答案

C

解析:略

 

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