用右下图装置制取、提纯并收集表中的四种气体(a、b、c表示相应仪

用右下图装置制取、提纯并收集表中的四种气体(abc表示相应仪器中加入的试剂),其中可行的是

气体

a

b

c

A

NO2

浓硝酸

铜片

NaOH溶液

B

SO2

浓硫酸

Cu

浓硫酸

C

O2

双氧水

二氧化锰

碱石灰

D

CO2

稀盐酸

CaCO3

饱和NaHCO3溶液

答案

D

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