下列有关硫酸和硝酸的说法中正确的是 A. 将过量的Zn投入一定量的浓

下列有关硫酸和硝酸的说法中正确的是

A. 将过量的Zn投入一定量的浓H2SO4中,最终生成的气体只有SO2

B. 向装有Fe(NO3)2溶液的试管中加入稀H2SO4,在管口观察到红棕色气体

C. 50 mL 12 mol·L1的浓硝酸中加入足量铜片其充分反应,生成0.3mol NO2

D. 运输保存浓硫酸的槽罐车一旦泄露后应立即用大量水冲洗

答案

B

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