A.1:1:1 | B.2:1:1 | C.3:7:4 | D.1:5:2 |
A.制Cu(NO3)2:Cu+4HNO4(浓)=Cu(NO3)2+2NO2↑+2H2O |
B.制Cu(NO3)2:3Cu+8HNO4(浓)=3Cu(NO3)2+2NO↑+4H2O |
C.制CuSO4:Cu+2H2SO4(浓) CuSO4+SO2↑+2H2O |
D.制CuSO4:2Cu+O22CuO;CuO+ H2SO4=CuSO4+ H2O |
A.将生成的气体用水充分吸收,剩余O2 |
B.Cu(NO3)2既被氧化,又被还原 |
C.每生成1 mol O2,转移电子2 mol |
D.NO2用足量的NaOH溶液吸收,产物为NaNO3和水 |
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